Finding the Fourth Proportional to 124,042.29, 171,105.27 and 78,028.59

Step by Step Solution

1. Step 1: Write the proportion equation
   124,042.29 : 171,105.27 = 78,028.59 : x
2. Step 2: Convert to fraction form
   124,042.29/171,105.27 = 78,028.59/x
3. Step 3: Cross multiply
   124,042.29x = 171,105.27 × 78,028.59
4. Step 4: Simplify right side
   124,042.29x = 13,351,102,959.67
5. Step 5: Solve for x
   x = 13,351,102,959.67/124,042.29
6. Step 6: Final answer
   x = 107,633.48