Guild Wars 2

Earlier today, I had 130 gold. When I recently checked, I now have 4 gold. My purchase history does not reflect any large purchases.
Where’d my gold go ?

RMT purchase?

Buy anything from some LS3 vendor? Home Nodes? Etc.

did you put up buy orders if so the trading post takes the gold you need to buy the items

Edit
If you cancel them it will get put into your trading post balance