Finding the Fourth Proportional to 111.61, 167.49 and 57.52

Step by Step Solution

1. Step 1: Write the proportion equation
   111.61 : 167.49 = 57.52 : x
2. Step 2: Convert to fraction form
   111.61/167.49 = 57.52/x
3. Step 3: Cross multiply
   111.61x = 167.49 × 57.52
4. Step 4: Simplify right side
   111.61x = 9,634.02
5. Step 5: Solve for x
   x = 9,634.02/111.61
6. Step 6: Final answer
   x = 86.32