Finding the Fourth Proportional to 116,101.20, 160,217.88 and 65,113.92

Step by Step Solution

1. Step 1: Write the proportion equation
   116,101.20 : 160,217.88 = 65,113.92 : x
2. Step 2: Convert to fraction form
   116,101.20/160,217.88 = 65,113.92/x
3. Step 3: Cross multiply
   116,101.20x = 160,217.88 × 65,113.92
4. Step 4: Simplify right side
   116,101.20x = 10,432,414,220.89
5. Step 5: Solve for x
   x = 10,432,414,220.89/116,101.20
6. Step 6: Final answer
   x = 89,856.21