Finding the Fourth Proportional to 111.43, 167.14 and 30.28

Step by Step Solution

1. Step 1: Write the proportion equation
   111.43 : 167.14 = 30.28 : x
2. Step 2: Convert to fraction form
   111.43/167.14 = 30.28/x
3. Step 3: Cross multiply
   111.43x = 167.14 × 30.28
4. Step 4: Simplify right side
   111.43x = 5,061.32
5. Step 5: Solve for x
   x = 5,061.32/111.43
6. Step 6: Final answer
   x = 45.42