Finding the Fourth Proportional to 103,399.32, 142,654.73 and 67,610.28

Step by Step Solution

1. Step 1: Write the proportion equation
   103,399.32 : 142,654.73 = 67,610.28 : x
2. Step 2: Convert to fraction form
   103,399.32/142,654.73 = 67,610.28/x
3. Step 3: Cross multiply
   103,399.32x = 142,654.73 × 67,610.28
4. Step 4: Simplify right side
   103,399.32x = 9,644,925,900.57
5. Step 5: Solve for x
   x = 9,644,925,900.57/103,399.32
6. Step 6: Final answer
   x = 93,278.43