Finding the Fourth Proportional to 42.06, 57.98 and 35.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42.06 : 57.98 = 35.50 : x
2. Step 2: Convert to fraction form
   42.06/57.98 = 35.50/x
3. Step 3: Cross multiply
   42.06x = 57.98 × 35.50
4. Step 4: Simplify right side
   42.06x = 2,058.29
5. Step 5: Solve for x
   x = 2,058.29/42.06
6. Step 6: Final answer
   x = 48.94