Finding the Fourth Proportional to 124,727.34, 172,123.73 and 68,138.72

Step by Step Solution

1. Step 1: Write the proportion equation
   124,727.34 : 172,123.73 = 68,138.72 : x
2. Step 2: Convert to fraction form
   124,727.34/172,123.73 = 68,138.72/x
3. Step 3: Cross multiply
   124,727.34x = 172,123.73 × 68,138.72
4. Step 4: Simplify right side
   124,727.34x = 11,728,290,726.78
5. Step 5: Solve for x
   x = 11,728,290,726.78/124,727.34
6. Step 6: Final answer
   x = 94,031.43