Finding the Fourth Proportional to 103,535.33, 142,876.31 and 67,724.55

Step by Step Solution

1. Step 1: Write the proportion equation
   103,535.33 : 142,876.31 = 67,724.55 : x
2. Step 2: Convert to fraction form
   103,535.33/142,876.31 = 67,724.55/x
3. Step 3: Cross multiply
   103,535.33x = 142,876.31 × 67,724.55
4. Step 4: Simplify right side
   103,535.33x = 9,676,233,461.79
5. Step 5: Solve for x
   x = 9,676,233,461.79/103,535.33
6. Step 6: Final answer
   x = 93,458.28