Finding the Fourth Proportional to 42.54, 58.72 and 29.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42.54 : 58.72 = 29.42 : x
2. Step 2: Convert to fraction form
   42.54/58.72 = 29.42/x
3. Step 3: Cross multiply
   42.54x = 58.72 × 29.42
4. Step 4: Simplify right side
   42.54x = 1,727.66
5. Step 5: Solve for x
   x = 1,727.66/42.54
6. Step 6: Final answer
   x = 40.61