Finding the Fourth Proportional to 110.91, 166.41 and 42.46

Step by Step Solution

1. Step 1: Write the proportion equation
   110.91 : 166.41 = 42.46 : x
2. Step 2: Convert to fraction form
   110.91/166.41 = 42.46/x
3. Step 3: Cross multiply
   110.91x = 166.41 × 42.46
4. Step 4: Simplify right side
   110.91x = 7,064.72
5. Step 5: Solve for x
   x = 7,064.72/110.91
6. Step 6: Final answer
   x = 63.70