Finding the Fourth Proportional to 111.85, 167.78 and 30.71

Step by Step Solution

1. Step 1: Write the proportion equation
   111.85 : 167.78 = 30.71 : x
2. Step 2: Convert to fraction form
   111.85/167.78 = 30.71/x
3. Step 3: Cross multiply
   111.85x = 167.78 × 30.71
4. Step 4: Simplify right side
   111.85x = 5,151.53
5. Step 5: Solve for x
   x = 5,151.53/111.85
6. Step 6: Final answer
   x = 46.06