What is the combined wealth of the Roman Catholic Church including property of churches world wide and the value of its treasures?

First of all, Roman is an epithet first commonly used in England after the protestant revolt to describe the Catholic Church. It is rarely used by the Catholic Church.

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Secondly, the "Catholic Church" is not a world-wide corporation that owns property and treasures. The Cathedral in Paris is owned by the parishioners of Paris, and administered by the parish priest appointed by the Bishop. If you look at the link below you can check out the publicly issued balance sheet put out by the Vatican

• they operate at a loss every year. The Vatican is supported by

Peter's Pence, a one Sunday collection from most Catholics in the world, the entire sum is spent on charities, any income that the Vatican makes goes towards paying its staff who are responsible for the faithful world-wide.