Finding the Fourth Proportional to 42.16, 58.56 and 41.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42.16 : 58.56 = 41.60 : x
2. Step 2: Convert to fraction form
   42.16/58.56 = 41.60/x
3. Step 3: Cross multiply
   42.16x = 58.56 × 41.60
4. Step 4: Simplify right side
   42.16x = 2,436.10
5. Step 5: Solve for x
   x = 2,436.10/42.16
6. Step 6: Final answer
   x = 57.78