How can I find out what contributes to the majority of the wealth of my fortress?
From the Dwarf Fortress wiki:
Other infos from the Bookkeeper page:
If you're looking for good ways to increase your fortress wealth, the same page lists some:
There is no simple way in-game to see the value of everything in your fortress. But to see any values, you will need an active bookeeper (for seeing values in stocks) and appraiser (for seeing values in trade related screens).
If you have a Trade Depot, when a foreign trader is in your fortress, you can go into the "g: Move Goods to/from Depot" in the Trade Depot building's tasks. Once in it, you can "d: sort by value". This will sort EVERY ITEM not installed by the most valuable to the least. This won't show you: a) artifacts, and b) worn/installed/constructed items (a brass axe that a woodcutter is using to chop trees will not be listed; A gold table that has been "built" will not be listed, but the same gold table in a stockpile will be). To see the EXACT value of each item, you will need to view the item's description. Containers may hold very valuable items, and you will have to view the individual items in the containers to see their exact value.
In the actual trading menu, each item's value is listed.
You can view the value of all your artifacts by using the "l" (view artifact) and viewing their basic description individually.
Of course, you can always get any item's value by looking at it individually, whether you use the "k" to look around on the game screen or navigate to it via the inventory of a dwarf or goblin.
There may be a utility to list item in your fortress and its value, but if so, I don't know its name.