Finding the Fourth Proportional to 111.10, 166.47 and 88.15

Step by Step Solution

1. Step 1: Write the proportion equation
   111.10 : 166.47 = 88.15 : x
2. Step 2: Convert to fraction form
   111.10/166.47 = 88.15/x
3. Step 3: Cross multiply
   111.10x = 166.47 × 88.15
4. Step 4: Simplify right side
   111.10x = 14,674.33
5. Step 5: Solve for x
   x = 14,674.33/111.10
6. Step 6: Final answer
   x = 132.08