Finding the Fourth Proportional to 42.05, 62.71 and 41.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42.05 : 62.71 = 41.02 : x
2. Step 2: Convert to fraction form
   42.05/62.71 = 41.02/x
3. Step 3: Cross multiply
   42.05x = 62.71 × 41.02
4. Step 4: Simplify right side
   42.05x = 2,572.34
5. Step 5: Solve for x
   x = 2,572.34/42.05
6. Step 6: Final answer
   x = 61.17