Finding the Fourth Proportional to 42.71, 58.95 and 35.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42.71 : 58.95 = 35.42 : x
2. Step 2: Convert to fraction form
   42.71/58.95 = 35.42/x
3. Step 3: Cross multiply
   42.71x = 58.95 × 35.42
4. Step 4: Simplify right side
   42.71x = 2,087.83
5. Step 5: Solve for x
   x = 2,087.83/42.71
6. Step 6: Final answer
   x = 48.88