Finding the Fourth Proportional to 111.52, 167.33 and 107.17

Step by Step Solution

1. Step 1: Write the proportion equation
   111.52 : 167.33 = 107.17 : x
2. Step 2: Convert to fraction form
   111.52/167.33 = 107.17/x
3. Step 3: Cross multiply
   111.52x = 167.33 × 107.17
4. Step 4: Simplify right side
   111.52x = 17,932.76
5. Step 5: Solve for x
   x = 17,932.76/111.52
6. Step 6: Final answer
   x = 160.80