Finding the Fourth Proportional to 116,205.60, 160,366.92 and 65,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,205.60 : 160,366.92 = 65,221.50 : x
2. Step 2: Convert to fraction form
   116,205.60/160,366.92 = 65,221.50/x
3. Step 3: Cross multiply
   116,205.60x = 160,366.92 × 65,221.50
4. Step 4: Simplify right side
   116,205.60x = 10,459,371,072.78
5. Step 5: Solve for x
   x = 10,459,371,072.78/116,205.60
6. Step 6: Final answer
   x = 90,007.46