Finding the Fourth Proportional to 90,714.42, 125,246.98 and 81,124.56

Step by Step Solution

1. Step 1: Write the proportion equation
   90,714.42 : 125,246.98 = 81,124.56 : x
2. Step 2: Convert to fraction form
   90,714.42/125,246.98 = 81,124.56/x
3. Step 3: Cross multiply
   90,714.42x = 125,246.98 × 81,124.56
4. Step 4: Simplify right side
   90,714.42x = 10,160,606,143.83
5. Step 5: Solve for x
   x = 10,160,606,143.83/90,714.42
6. Step 6: Final answer
   x = 112,006.52