Finding the Fourth Proportional to 111,942.18, 154,491.12 and 83,598.66

Step by Step Solution

1. Step 1: Write the proportion equation
   111,942.18 : 154,491.12 = 83,598.66 : x
2. Step 2: Convert to fraction form
   111,942.18/154,491.12 = 83,598.66/x
3. Step 3: Cross multiply
   111,942.18x = 154,491.12 × 83,598.66
4. Step 4: Simplify right side
   111,942.18x = 12,915,250,613.90
5. Step 5: Solve for x
   x = 12,915,250,613.90/111,942.18
6. Step 6: Final answer
   x = 115,374.30