Finding the Fourth Proportional to 111,123.54, 153,349.31 and 60,135.17

Step by Step Solution

1. Step 1: Write the proportion equation
   111,123.54 : 153,349.31 = 60,135.17 : x
2. Step 2: Convert to fraction form
   111,123.54/153,349.31 = 60,135.17/x
3. Step 3: Cross multiply
   111,123.54x = 153,349.31 × 60,135.17
4. Step 4: Simplify right side
   111,123.54x = 9,221,686,209.82
5. Step 5: Solve for x
   x = 9,221,686,209.82/111,123.54
6. Step 6: Final answer
   x = 82,985.89