Finding the Fourth Proportional to 103,531.48, 142,882.56 and 61,081.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,531.48 : 142,882.56 = 61,081.72 : x
2. Step 2: Convert to fraction form
   103,531.48/142,882.56 = 61,081.72/x
3. Step 3: Cross multiply
   103,531.48x = 142,882.56 × 61,081.72
4. Step 4: Simplify right side
   103,531.48x = 8,727,512,522.80
5. Step 5: Solve for x
   x = 8,727,512,522.80/103,531.48
6. Step 6: Final answer
   x = 84,298.15