Finding the Fourth Proportional to 90,385.98, 124,737.24 and 52,131.30

Step by Step Solution

1. Step 1: Write the proportion equation
   90,385.98 : 124,737.24 = 52,131.30 : x
2. Step 2: Convert to fraction form
   90,385.98/124,737.24 = 52,131.30/x
3. Step 3: Cross multiply
   90,385.98x = 124,737.24 × 52,131.30
4. Step 4: Simplify right side
   90,385.98x = 6,502,714,479.61
5. Step 5: Solve for x
   x = 6,502,714,479.61/90,385.98
6. Step 6: Final answer
   x = 71,943.84