Finding the Fourth Proportional to 111,126.54, 153,353.43 and 60,138.15

Step by Step Solution

1. Step 1: Write the proportion equation
   111,126.54 : 153,353.43 = 60,138.15 : x
2. Step 2: Convert to fraction form
   111,126.54/153,353.43 = 60,138.15/x
3. Step 3: Cross multiply
   111,126.54x = 153,353.43 × 60,138.15
4. Step 4: Simplify right side
   111,126.54x = 9,222,390,809.59
5. Step 5: Solve for x
   x = 9,222,390,809.59/111,126.54
6. Step 6: Final answer
   x = 82,989.99