Finding the Fourth Proportional to 111.24, 166.86 and 30.09

Step by Step Solution

1. Step 1: Write the proportion equation
   111.24 : 166.86 = 30.09 : x
2. Step 2: Convert to fraction form
   111.24/166.86 = 30.09/x
3. Step 3: Cross multiply
   111.24x = 166.86 × 30.09
4. Step 4: Simplify right side
   111.24x = 5,020.82
5. Step 5: Solve for x
   x = 5,020.82/111.24
6. Step 6: Final answer
   x = 45.14