Finding the Fourth Proportional to 113,135.38, 156,117.72 and 65,391.82

Step by Step Solution

1. Step 1: Write the proportion equation
   113,135.38 : 156,117.72 = 65,391.82 : x
2. Step 2: Convert to fraction form
   113,135.38/156,117.72 = 65,391.82/x
3. Step 3: Cross multiply
   113,135.38x = 156,117.72 × 65,391.82
4. Step 4: Simplify right side
   113,135.38x = 10,208,821,845.05
5. Step 5: Solve for x
   x = 10,208,821,845.05/113,135.38
6. Step 6: Final answer
   x = 90,235.45