Finding the Fourth Proportional to 42.01, 63.01 and 17.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42.01 : 63.01 = 17.61 : x
2. Step 2: Convert to fraction form
   42.01/63.01 = 17.61/x
3. Step 3: Cross multiply
   42.01x = 63.01 × 17.61
4. Step 4: Simplify right side
   42.01x = 1,109.86
5. Step 5: Solve for x
   x = 1,109.86/42.01
6. Step 6: Final answer
   x = 26.42