Finding the Fourth Proportional to 113,143.27, 156,138.72 and 62,157.15

Step by Step Solution

1. Step 1: Write the proportion equation
   113,143.27 : 156,138.72 = 62,157.15 : x
2. Step 2: Convert to fraction form
   113,143.27/156,138.72 = 62,157.15/x
3. Step 3: Cross multiply
   113,143.27x = 156,138.72 × 62,157.15
4. Step 4: Simplify right side
   113,143.27x = 9,705,137,059.15
5. Step 5: Solve for x
   x = 9,705,137,059.15/113,143.27
6. Step 6: Final answer
   x = 85,777.41