Finding the Fourth Proportional to 103.42, 155.12 and 38.42

Step by Step Solution

1. Step 1: Write the proportion equation
   103.42 : 155.12 = 38.42 : x
2. Step 2: Convert to fraction form
   103.42/155.12 = 38.42/x
3. Step 3: Cross multiply
   103.42x = 155.12 × 38.42
4. Step 4: Simplify right side
   103.42x = 5,959.71
5. Step 5: Solve for x
   x = 5,959.71/103.42
6. Step 6: Final answer
   x = 57.63