Finding the Fourth Proportional to 124.72, 171.89 and 93.58

Step by Step Solution

1. Step 1: Write the proportion equation
   124.72 : 171.89 = 93.58 : x
2. Step 2: Convert to fraction form
   124.72/171.89 = 93.58/x
3. Step 3: Cross multiply
   124.72x = 171.89 × 93.58
4. Step 4: Simplify right side
   124.72x = 16,085.00
5. Step 5: Solve for x
   x = 16,085.00/124.72
6. Step 6: Final answer
   x = 128.97