Finding the Fourth Proportional to 42.17, 58.17 and 25.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42.17 : 58.17 = 25.82 : x
2. Step 2: Convert to fraction form
   42.17/58.17 = 25.82/x
3. Step 3: Cross multiply
   42.17x = 58.17 × 25.82
4. Step 4: Simplify right side
   42.17x = 1,501.83
5. Step 5: Solve for x
   x = 1,501.83/42.17
6. Step 6: Final answer
   x = 35.61