Finding the Fourth Proportional to 111.14, 166.52 and 74.96

Step by Step Solution

1. Step 1: Write the proportion equation
   111.14 : 166.52 = 74.96 : x
2. Step 2: Convert to fraction form
   111.14/166.52 = 74.96/x
3. Step 3: Cross multiply
   111.14x = 166.52 × 74.96
4. Step 4: Simplify right side
   111.14x = 12,481.69
5. Step 5: Solve for x
   x = 12,481.69/111.14
6. Step 6: Final answer
   x = 112.31