Finding the Fourth Proportional to 111,630.28, 154,049.17 and 60,642.60

Step by Step Solution

1. Step 1: Write the proportion equation
   111,630.28 : 154,049.17 = 60,642.60 : x
2. Step 2: Convert to fraction form
   111,630.28/154,049.17 = 60,642.60/x
3. Step 3: Cross multiply
   111,630.28x = 154,049.17 × 60,642.60
4. Step 4: Simplify right side
   111,630.28x = 9,341,941,843.76
5. Step 5: Solve for x
   x = 9,341,941,843.76/111,630.28
6. Step 6: Final answer
   x = 83,686.45