Finding the Fourth Proportional to 113,441.58, 156,558.42 and 65,695.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,441.58 : 156,558.42 = 65,695.78 : x
2. Step 2: Convert to fraction form
   113,441.58/156,558.42 = 65,695.78/x
3. Step 3: Cross multiply
   113,441.58x = 156,558.42 × 65,695.78
4. Step 4: Simplify right side
   113,441.58x = 10,285,227,517.47
5. Step 5: Solve for x
   x = 10,285,227,517.47/113,441.58
6. Step 6: Final answer
   x = 90,665.41