Finding the Fourth Proportional to 111.32, 167.69 and 83

Step by Step Solution

1. Step 1: Write the proportion equation
   111.32 : 167.69 = 83 : x
2. Step 2: Convert to fraction form
   111.32/167.69 = 83/x
3. Step 3: Cross multiply
   111.32x = 167.69 × 83
4. Step 4: Simplify right side
   111.32x = 13,918.27
5. Step 5: Solve for x
   x = 13,918.27/111.32
6. Step 6: Final answer
   x = 125.03