Finding the Fourth Proportional to 116,702.42, 161,047.61 and 65,715.24

Step by Step Solution

1. Step 1: Write the proportion equation
   116,702.42 : 161,047.61 = 65,715.24 : x
2. Step 2: Convert to fraction form
   116,702.42/161,047.61 = 65,715.24/x
3. Step 3: Cross multiply
   116,702.42x = 161,047.61 × 65,715.24
4. Step 4: Simplify right side
   116,702.42x = 10,583,282,506.86
5. Step 5: Solve for x
   x = 10,583,282,506.86/116,702.42
6. Step 6: Final answer
   x = 90,686.06