Finding the Fourth Proportional to 39,872,096.50, 55,023,515.31 and 21,537,382.18

Step by Step Solution

1. Step 1: Write the proportion equation
   39,872,096.50 : 55,023,515.31 = 21,537,382.18 : x
2. Step 2: Convert to fraction form
   39,872,096.50/55,023,515.31 = 21,537,382.18/x
3. Step 3: Cross multiply
   39,872,096.50x = 55,023,515.31 × 21,537,382.18
4. Step 4: Simplify right side
   39,872,096.50x = 1,185,062,478,118,551.25
5. Step 5: Solve for x
   x = 1,185,062,478,118,551.25/39,872,096.50
6. Step 6: Final answer
   x = 29,721,599.37