Finding the Fourth Proportional to 39,872,012, 55,023,398.42 and 21,537,297.52

Step by Step Solution

1. Step 1: Write the proportion equation
   39,872,012 : 55,023,398.42 = 21,537,297.52 : x
2. Step 2: Convert to fraction form
   39,872,012/55,023,398.42 = 21,537,297.52/x
3. Step 3: Cross multiply
   39,872,012x = 55,023,398.42 × 21,537,297.52
4. Step 4: Simplify right side
   39,872,012x = 1,185,055,302,333,038
5. Step 5: Solve for x
   x = 1,185,055,302,333,038/39,872,012
6. Step 6: Final answer
   x = 29,721,482.39