Finding the Fourth Proportional to 85.24, 127.94 and 42.52

Step by Step Solution

1. Step 1: Write the proportion equation
   85.24 : 127.94 = 42.52 : x
2. Step 2: Convert to fraction form
   85.24/127.94 = 42.52/x
3. Step 3: Cross multiply
   85.24x = 127.94 × 42.52
4. Step 4: Simplify right side
   85.24x = 5,440.01
5. Step 5: Solve for x
   x = 5,440.01/85.24
6. Step 6: Final answer
   x = 63.82