Finding the Fourth Proportional to 113,431.34, 156,544.28 and 65,685.52

Step by Step Solution

1. Step 1: Write the proportion equation
   113,431.34 : 156,544.28 = 65,685.52 : x
2. Step 2: Convert to fraction form
   113,431.34/156,544.28 = 65,685.52/x
3. Step 3: Cross multiply
   113,431.34x = 156,544.28 × 65,685.52
4. Step 4: Simplify right side
   113,431.34x = 10,282,692,434.83
5. Step 5: Solve for x
   x = 10,282,692,434.83/113,431.34
6. Step 6: Final answer
   x = 90,651.25