Finding the Fourth Proportional to 111,960.18, 154,515.96 and 83,616.66

Step by Step Solution

1. Step 1: Write the proportion equation
   111,960.18 : 154,515.96 = 83,616.66 : x
2. Step 2: Convert to fraction form
   111,960.18/154,515.96 = 83,616.66/x
3. Step 3: Cross multiply
   111,960.18x = 154,515.96 × 83,616.66
4. Step 4: Simplify right side
   111,960.18x = 12,920,108,491.89
5. Step 5: Solve for x
   x = 12,920,108,491.89/111,960.18
6. Step 6: Final answer
   x = 115,399.14