Finding the Fourth Proportional to 110.86, 166.18 and 42.34

Step by Step Solution

1. Step 1: Write the proportion equation
   110.86 : 166.18 = 42.34 : x
2. Step 2: Convert to fraction form
   110.86/166.18 = 42.34/x
3. Step 3: Cross multiply
   110.86x = 166.18 × 42.34
4. Step 4: Simplify right side
   110.86x = 7,036.06
5. Step 5: Solve for x
   x = 7,036.06/110.86
6. Step 6: Final answer
   x = 63.47