Finding the Fourth Proportional to 90,500.52, 124,895 and 56,529.12

Step by Step Solution

1. Step 1: Write the proportion equation
   90,500.52 : 124,895 = 56,529.12 : x
2. Step 2: Convert to fraction form
   90,500.52/124,895 = 56,529.12/x
3. Step 3: Cross multiply
   90,500.52x = 124,895 × 56,529.12
4. Step 4: Simplify right side
   90,500.52x = 7,060,204,442.40
5. Step 5: Solve for x
   x = 7,060,204,442.40/90,500.52
6. Step 6: Final answer
   x = 78,012.86