Finding the Fourth Proportional to 113,691.84, 156,909 and 65,308.92

Step by Step Solution

1. Step 1: Write the proportion equation
   113,691.84 : 156,909 = 65,308.92 : x
2. Step 2: Convert to fraction form
   113,691.84/156,909 = 65,308.92/x
3. Step 3: Cross multiply
   113,691.84x = 156,909 × 65,308.92
4. Step 4: Simplify right side
   113,691.84x = 10,247,557,328.28
5. Step 5: Solve for x
   x = 10,247,557,328.28/113,691.84
6. Step 6: Final answer
   x = 90,134.50