Finding the Fourth Proportional to 116,105.64, 160,227.62 and 65,129.70

Step by Step Solution

1. Step 1: Write the proportion equation
   116,105.64 : 160,227.62 = 65,129.70 : x
2. Step 2: Convert to fraction form
   116,105.64/160,227.62 = 65,129.70/x
3. Step 3: Cross multiply
   116,105.64x = 160,227.62 × 65,129.70
4. Step 4: Simplify right side
   116,105.64x = 10,435,576,496.67
5. Step 5: Solve for x
   x = 10,435,576,496.67/116,105.64
6. Step 6: Final answer
   x = 89,880.01