Finding the Fourth Proportional to 103,401.20, 142,657.31 and 67,612.16

Step by Step Solution

1. Step 1: Write the proportion equation
   103,401.20 : 142,657.31 = 67,612.16 : x
2. Step 2: Convert to fraction form
   103,401.20/142,657.31 = 67,612.16/x
3. Step 3: Cross multiply
   103,401.20x = 142,657.31 × 67,612.16
4. Step 4: Simplify right side
   103,401.20x = 9,645,368,155.60
5. Step 5: Solve for x
   x = 9,645,368,155.60/103,401.20
6. Step 6: Final answer
   x = 93,281.01