Finding the Fourth Proportional to 113,823.50, 157,081.50 and 65,441.12

Step by Step Solution

1. Step 1: Write the proportion equation
   113,823.50 : 157,081.50 = 65,441.12 : x
2. Step 2: Convert to fraction form
   113,823.50/157,081.50 = 65,441.12/x
3. Step 3: Cross multiply
   113,823.50x = 157,081.50 × 65,441.12
4. Step 4: Simplify right side
   113,823.50x = 10,279,588,689.93
5. Step 5: Solve for x
   x = 10,279,588,689.93/113,823.50
6. Step 6: Final answer
   x = 90,311.66