Finding the Fourth Proportional to 111,123.20, 153,348.72 and 60,134.75

Step by Step Solution

1. Step 1: Write the proportion equation
   111,123.20 : 153,348.72 = 60,134.75 : x
2. Step 2: Convert to fraction form
   111,123.20/153,348.72 = 60,134.75/x
3. Step 3: Cross multiply
   111,123.20x = 153,348.72 × 60,134.75
4. Step 4: Simplify right side
   111,123.20x = 9,221,586,751.16
5. Step 5: Solve for x
   x = 9,221,586,751.16/111,123.20
6. Step 6: Final answer
   x = 82,985.25