Finding the Fourth Proportional to 113,110.71, 156,111.98 and 65,391.81

Step by Step Solution

1. Step 1: Write the proportion equation
   113,110.71 : 156,111.98 = 65,391.81 : x
2. Step 2: Convert to fraction form
   113,110.71/156,111.98 = 65,391.81/x
3. Step 3: Cross multiply
   113,110.71x = 156,111.98 × 65,391.81
4. Step 4: Simplify right side
   113,110.71x = 10,208,444,934.88
5. Step 5: Solve for x
   x = 10,208,444,934.88/113,110.71
6. Step 6: Final answer
   x = 90,251.80