Finding the Fourth Proportional to 111.07, 166.61 and 34.03

Step by Step Solution

1. Step 1: Write the proportion equation
   111.07 : 166.61 = 34.03 : x
2. Step 2: Convert to fraction form
   111.07/166.61 = 34.03/x
3. Step 3: Cross multiply
   111.07x = 166.61 × 34.03
4. Step 4: Simplify right side
   111.07x = 5,670.17
5. Step 5: Solve for x
   x = 5,670.17/111.07
6. Step 6: Final answer
   x = 51.05