Finding the Fourth Proportional to 113,142.18, 156,118.87 and 65,386.32

Step by Step Solution

1. Step 1: Write the proportion equation
   113,142.18 : 156,118.87 = 65,386.32 : x
2. Step 2: Convert to fraction form
   113,142.18/156,118.87 = 65,386.32/x
3. Step 3: Cross multiply
   113,142.18x = 156,118.87 × 65,386.32
4. Step 4: Simplify right side
   113,142.18x = 10,208,038,391.86
5. Step 5: Solve for x
   x = 10,208,038,391.86/113,142.18
6. Step 6: Final answer
   x = 90,223.10