Weapons: 9,905,195☼ x 63,312 = $627,117,705,840
Armour and Garb: 21,918,018☼ x 63,312 = $1,387,673,556,000
Furniture: 7,479,478☼ x 63,312 = $473,540,711,136
Other Objects: 61,917,417☼ x 63,312 = $3,920,115,505,000
Architecture: 16,598,278☼ x 63,312 = $1,050,870,177,000
Displayed: 14,921,493☼ x 63,312 = $944,709,564,816
Held/Worn: 22,763,472☼ x 63,312 = $1,441,200,939,000
Overall: $9,845,228,159,000 in the year 433.
That's excluding the cost of the livestock and the worth of the Dwarves themselves. This number would make Silentthunders as rich as a city like Belfast or Luton. If only Displayed, Architecture and Furniture are used for the worth of the Fort itself it's worth $2,469,120,453,000, it could pass as the capital of a small nation. I'm pleased, but need more wealth!
Let's assume the cheapest food available to a dwarf. Unspecified meat of some low-value animal; 2 urists.
That means to eat for a month, it cost a dwarf
2*63,312=$126,624
For a human, food for a month might cost
31*3*8=$744
You are forgetting that Dwarves eat 8 times a year in game and the cheapest food is 1 urist.
8 x 63,612 / 365 = $1,387.66
The cheapest Dwarven diet would cost nearly $1.4k a day without alcohol factored in.
Perhaps a more accurate assessment of the gold standard would be to find the exchange rate of gold coins to strawberries and run it through the exchange rate of gold coins to urists and gold coins to strawberries irl.
*EDIT
I am looking at the coins themselves. Strawberries are not needed.