Finding the Fourth Proportional to 100,443.52, 138,616.39 and 60,149.56

Step by Step Solution

1. Step 1: Write the proportion equation
   100,443.52 : 138,616.39 = 60,149.56 : x
2. Step 2: Convert to fraction form
   100,443.52/138,616.39 = 60,149.56/x
3. Step 3: Cross multiply
   100,443.52x = 138,616.39 × 60,149.56
4. Step 4: Simplify right side
   100,443.52x = 8,337,715,076.53
5. Step 5: Solve for x
   x = 8,337,715,076.53/100,443.52
6. Step 6: Final answer
   x = 83,008.99