Finding the Fourth Proportional to 42.09, 58.13 and 35.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42.09 : 58.13 = 35.47 : x
2. Step 2: Convert to fraction form
   42.09/58.13 = 35.47/x
3. Step 3: Cross multiply
   42.09x = 58.13 × 35.47
4. Step 4: Simplify right side
   42.09x = 2,061.87
5. Step 5: Solve for x
   x = 2,061.87/42.09
6. Step 6: Final answer
   x = 48.99