214748g 36s 47cp - thats cap I suppose. I don't know how much you know about programming, but thats no simply random number, its int(10) SIGNED maximal value (don't ask me why there is UNSIGNED in database, maybe for removing gold under 0 before it is reset to 0 by core?).You would need to change structure of some DB tables (if you are lucky, it will be only characters.characters and world.item_template, but I doubt it) and also change data type for all values reffering to money player is carrying in source of emulator. And its very likely that you would also have to change wow.exe itself.So no simple, I would dare to say impossible task.