Finding the Fourth Proportional to 113,437.58, 156,552.90 and 65,691.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,437.58 : 156,552.90 = 65,691.78 : x
2. Step 2: Convert to fraction form
   113,437.58/156,552.90 = 65,691.78/x
3. Step 3: Cross multiply
   113,437.58x = 156,552.90 × 65,691.78
4. Step 4: Simplify right side
   113,437.58x = 10,284,238,665.16
5. Step 5: Solve for x
   x = 10,284,238,665.16/113,437.58
6. Step 6: Final answer
   x = 90,659.89