Finding the Fourth Proportional to 111.29, 166.91 and 34.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111.29 : 166.91 = 34.25 : x
2. Step 2: Convert to fraction form
   111.29/166.91 = 34.25/x
3. Step 3: Cross multiply
   111.29x = 166.91 × 34.25
4. Step 4: Simplify right side
   111.29x = 5,716.32
5. Step 5: Solve for x
   x = 5,716.32/111.29
6. Step 6: Final answer
   x = 51.37