Finding the Fourth Proportional to 103.32, 154.83 and 42.42

Step by Step Solution

1. Step 1: Write the proportion equation
   103.32 : 154.83 = 42.42 : x
2. Step 2: Convert to fraction form
   103.32/154.83 = 42.42/x
3. Step 3: Cross multiply
   103.32x = 154.83 × 42.42
4. Step 4: Simplify right side
   103.32x = 6,567.89
5. Step 5: Solve for x
   x = 6,567.89/103.32
6. Step 6: Final answer
   x = 63.57