Finding the Fourth Proportional to 90,392.76, 124,699.82 and 56,877.24

Step by Step Solution

1. Step 1: Write the proportion equation
   90,392.76 : 124,699.82 = 56,877.24 : x
2. Step 2: Convert to fraction form
   90,392.76/124,699.82 = 56,877.24/x
3. Step 3: Cross multiply
   90,392.76x = 124,699.82 × 56,877.24
4. Step 4: Simplify right side
   90,392.76x = 7,092,581,590.10
5. Step 5: Solve for x
   x = 7,092,581,590.10/90,392.76
6. Step 6: Final answer
   x = 78,464.05