Finding the Fourth Proportional to 72,487.71, 99,987.01 and 52,374.13

Step by Step Solution

1. Step 1: Write the proportion equation
   72,487.71 : 99,987.01 = 52,374.13 : x
2. Step 2: Convert to fraction form
   72,487.71/99,987.01 = 52,374.13/x
3. Step 3: Cross multiply
   72,487.71x = 99,987.01 × 52,374.13
4. Step 4: Simplify right side
   72,487.71x = 5,236,732,279.15
5. Step 5: Solve for x
   x = 5,236,732,279.15/72,487.71
6. Step 6: Final answer
   x = 72,243.04