Finding the Fourth Proportional to 111.92, 167.94 and 51.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111.92 : 167.94 = 51.10 : x
2. Step 2: Convert to fraction form
   111.92/167.94 = 51.10/x
3. Step 3: Cross multiply
   111.92x = 167.94 × 51.10
4. Step 4: Simplify right side
   111.92x = 8,581.73
5. Step 5: Solve for x
   x = 8,581.73/111.92
6. Step 6: Final answer
   x = 76.68