Finding the Fourth Proportional to 103,404.32, 142,661.62 and 67,615.28

Step by Step Solution

1. Step 1: Write the proportion equation
   103,404.32 : 142,661.62 = 67,615.28 : x
2. Step 2: Convert to fraction form
   103,404.32/142,661.62 = 67,615.28/x
3. Step 3: Cross multiply
   103,404.32x = 142,661.62 × 67,615.28
4. Step 4: Simplify right side
   103,404.32x = 9,646,105,381.55
5. Step 5: Solve for x
   x = 9,646,105,381.55/103,404.32
6. Step 6: Final answer
   x = 93,285.32