Finding the Fourth Proportional to 113,120.74, 156,099.72 and 62,123.55

Step by Step Solution

1. Step 1: Write the proportion equation
   113,120.74 : 156,099.72 = 62,123.55 : x
2. Step 2: Convert to fraction form
   113,120.74/156,099.72 = 62,123.55/x
3. Step 3: Cross multiply
   113,120.74x = 156,099.72 × 62,123.55
4. Step 4: Simplify right side
   113,120.74x = 9,697,468,760.41
5. Step 5: Solve for x
   x = 9,697,468,760.41/113,120.74
6. Step 6: Final answer
   x = 85,726.71