here is a detailed summary of how brown allocates funding, with relevant tables at the end (note all figures are represented in thousands of $)
http://www.brown.edu/Administration/.../urc/URC08.pdf
as you can see, the entire enterprise of educating students requires three quarters of a billion dollars each year in liquid resources (this does not even include the value added from nonliquid resources such as special library collections, museum holdings, etc.).
dividing this number by the total student body yields annual expenditures that are two-three times tuition, summing to $400-500 thousand dollars over four years of college.