Finding the Fourth Proportional to 111.52, 167.13 and 82.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111.52 : 167.13 = 82.69 : x
2. Step 2: Convert to fraction form
   111.52/167.13 = 82.69/x
3. Step 3: Cross multiply
   111.52x = 167.13 × 82.69
4. Step 4: Simplify right side
   111.52x = 13,819.98
5. Step 5: Solve for x
   x = 13,819.98/111.52
6. Step 6: Final answer
   x = 123.92