Oh, dear.

A fine mess you've gotten yourself into.
Okay, first thing - stop panicking. A fine won't hurt for some time, unless you get wanted.
Check system map if one of the stations, outposts or planetary bases has a Black market. If they do, go there and sell the stuff. That'll minimize the damage. Otherwise space it.
Next thing you should do is get out of the system.
You have two options. Either you embrace the Viper, buy some guns and go earn money the hard way, or you can buy something smaller (Adder, for example) that can jump better and you can afford to outfit it properly.
If you decide to fight, find a planetary ring with Resource extraction sites, or a Nav Beacon next to the star, drop there and wait for a bit (I suspect you're not that experienced in fighting, if you just came out of the Hauler) Once System security ships start fighting the pirates, join in, carefully. All you need to do target the pirate, wait until you clearly see they're wanted and that they are NOT in a wing, wait until cops almost kill them and then land a couple of shots in the last 10 seconds of the fight. You'll get the bounty. If it is a High intensity site, the bounties vary from 5k (Sideys) to 150k (Anaconda), so you should be set soon enough.
One word of caution, though - if you die, you'll be returned to the station that issued the fine, which means it will get added to your rebuy costs. Do'¨t worry too much. You have about 600k that you can use as a loan to pay the insurance (even repeatedly)
If you decide for an Adder or something like that, just outfit it and get out of the system, then keep doing whatever you were doing in a Hauler.
If you can be online around 11pm galactic time (yeah, I know it's late), I could come over and help you. Otherwise good luck!