Finding the Fourth Proportional to 111.62, 167.42 and 30.47

Step by Step Solution

1. Step 1: Write the proportion equation
   111.62 : 167.42 = 30.47 : x
2. Step 2: Convert to fraction form
   111.62/167.42 = 30.47/x
3. Step 3: Cross multiply
   111.62x = 167.42 × 30.47
4. Step 4: Simplify right side
   111.62x = 5,101.78
5. Step 5: Solve for x
   x = 5,101.78/111.62
6. Step 6: Final answer
   x = 45.71