Finding the Fourth Proportional to 111,127.54, 153,354.81 and 60,139.15

Step by Step Solution

1. Step 1: Write the proportion equation
   111,127.54 : 153,354.81 = 60,139.15 : x
2. Step 2: Convert to fraction form
   111,127.54/153,354.81 = 60,139.15/x
3. Step 3: Cross multiply
   111,127.54x = 153,354.81 × 60,139.15
4. Step 4: Simplify right side
   111,127.54x = 9,222,627,921.81
5. Step 5: Solve for x
   x = 9,222,627,921.81/111,127.54
6. Step 6: Final answer
   x = 82,991.38