Finding the Fourth Proportional to 52.12, 71.94 and 42.52

Step by Step Solution

1. Step 1: Write the proportion equation
   52.12 : 71.94 = 42.52 : x
2. Step 2: Convert to fraction form
   52.12/71.94 = 42.52/x
3. Step 3: Cross multiply
   52.12x = 71.94 × 42.52
4. Step 4: Simplify right side
   52.12x = 3,058.89
5. Step 5: Solve for x
   x = 3,058.89/52.12
6. Step 6: Final answer
   x = 58.69