Finding the Fourth Proportional to 113,147.86, 156,126.69 and 65,391.99

Step by Step Solution

1. Step 1: Write the proportion equation
   113,147.86 : 156,126.69 = 65,391.99 : x
2. Step 2: Convert to fraction form
   113,147.86/156,126.69 = 65,391.99/x
3. Step 3: Cross multiply
   113,147.86x = 156,126.69 × 65,391.99
4. Step 4: Simplify right side
   113,147.86x = 10,209,434,951.21
5. Step 5: Solve for x
   x = 10,209,434,951.21/113,147.86
6. Step 6: Final answer
   x = 90,230.92