Finding the Fourth Proportional to 124,150.72, 171,167.88 and 90,208.48

Step by Step Solution

1. Step 1: Write the proportion equation
   124,150.72 : 171,167.88 = 90,208.48 : x
2. Step 2: Convert to fraction form
   124,150.72/171,167.88 = 90,208.48/x
3. Step 3: Cross multiply
   124,150.72x = 171,167.88 × 90,208.48
4. Step 4: Simplify right side
   124,150.72x = 15,440,794,279.62
5. Step 5: Solve for x
   x = 15,440,794,279.62/124,150.72
6. Step 6: Final answer
   x = 124,371.36