Finding the Fourth Proportional to 42.97, 58.82 and 42.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42.97 : 58.82 = 42.16 : x
2. Step 2: Convert to fraction form
   42.97/58.82 = 42.16/x
3. Step 3: Cross multiply
   42.97x = 58.82 × 42.16
4. Step 4: Simplify right side
   42.97x = 2,479.35
5. Step 5: Solve for x
   x = 2,479.35/42.97
6. Step 6: Final answer
   x = 57.71