Finding the Fourth Proportional to 124.47, 171.72 and 111.33

Step by Step Solution

1. Step 1: Write the proportion equation
   124.47 : 171.72 = 111.33 : x
2. Step 2: Convert to fraction form
   124.47/171.72 = 111.33/x
3. Step 3: Cross multiply
   124.47x = 171.72 × 111.33
4. Step 4: Simplify right side
   124.47x = 19,117.59
5. Step 5: Solve for x
   x = 19,117.59/124.47
6. Step 6: Final answer
   x = 153.59