Finding the Fourth Proportional to 90,463.86, 124,758.42 and 56,475.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,463.86 : 124,758.42 = 56,475.50 : x
2. Step 2: Convert to fraction form
   90,463.86/124,758.42 = 56,475.50/x
3. Step 3: Cross multiply
   90,463.86x = 124,758.42 × 56,475.50
4. Step 4: Simplify right side
   90,463.86x = 7,045,793,524.92
5. Step 5: Solve for x
   x = 7,045,793,524.92/90,463.86
6. Step 6: Final answer
   x = 77,885.17