Finding the Fourth Proportional to 72,401.47, 108,642.98 and 56,562.05

Step by Step Solution

1. Step 1: Write the proportion equation
   72,401.47 : 108,642.98 = 56,562.05 : x
2. Step 2: Convert to fraction form
   72,401.47/108,642.98 = 56,562.05/x
3. Step 3: Cross multiply
   72,401.47x = 108,642.98 × 56,562.05
4. Step 4: Simplify right side
   72,401.47x = 6,145,070,079.92
5. Step 5: Solve for x
   x = 6,145,070,079.92/72,401.47
6. Step 6: Final answer
   x = 84,874.94