Finding the Fourth Proportional to 111,760.50, 154,220.13 and 65,812.83

Step by Step Solution

1. Step 1: Write the proportion equation
   111,760.50 : 154,220.13 = 65,812.83 : x
2. Step 2: Convert to fraction form
   111,760.50/154,220.13 = 65,812.83/x
3. Step 3: Cross multiply
   111,760.50x = 154,220.13 × 65,812.83
4. Step 4: Simplify right side
   111,760.50x = 10,149,663,198.27
5. Step 5: Solve for x
   x = 10,149,663,198.27/111,760.50
6. Step 6: Final answer
   x = 90,816.19