Finding the Fourth Proportional to 100,359, 138,517.02 and 60,081.75

Step by Step Solution

1. Step 1: Write the proportion equation
   100,359 : 138,517.02 = 60,081.75 : x
2. Step 2: Convert to fraction form
   100,359/138,517.02 = 60,081.75/x
3. Step 3: Cross multiply
   100,359x = 138,517.02 × 60,081.75
4. Step 4: Simplify right side
   100,359x = 8,322,344,966.39
5. Step 5: Solve for x
   x = 8,322,344,966.39/100,359
6. Step 6: Final answer
   x = 82,925.75