Finding the Fourth Proportional to 42.72, 58.55 and 41.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42.72 : 58.55 = 41.94 : x
2. Step 2: Convert to fraction form
   42.72/58.55 = 41.94/x
3. Step 3: Cross multiply
   42.72x = 58.55 × 41.94
4. Step 4: Simplify right side
   42.72x = 2,455.38
5. Step 5: Solve for x
   x = 2,455.38/42.72
6. Step 6: Final answer
   x = 57.48