Finding the Fourth Proportional to 103,443.28, 142,751.82 and 58,731.28

Step by Step Solution

1. Step 1: Write the proportion equation
   103,443.28 : 142,751.82 = 58,731.28 : x
2. Step 2: Convert to fraction form
   103,443.28/142,751.82 = 58,731.28/x
3. Step 3: Cross multiply
   103,443.28x = 142,751.82 × 58,731.28
4. Step 4: Simplify right side
   103,443.28x = 8,383,997,110.93
5. Step 5: Solve for x
   x = 8,383,997,110.93/103,443.28
6. Step 6: Final answer
   x = 81,049.22