Finding the Fourth Proportional to 110.98, 166.33 and 42.42

Step by Step Solution

1. Step 1: Write the proportion equation
   110.98 : 166.33 = 42.42 : x
2. Step 2: Convert to fraction form
   110.98/166.33 = 42.42/x
3. Step 3: Cross multiply
   110.98x = 166.33 × 42.42
4. Step 4: Simplify right side
   110.98x = 7,055.72
5. Step 5: Solve for x
   x = 7,055.72/110.98
6. Step 6: Final answer
   x = 63.58