Finding the Fourth Proportional to 52.41, 72.24 and 42.09

Step by Step Solution

1. Step 1: Write the proportion equation
   52.41 : 72.24 = 42.09 : x
2. Step 2: Convert to fraction form
   52.41/72.24 = 42.09/x
3. Step 3: Cross multiply
   52.41x = 72.24 × 42.09
4. Step 4: Simplify right side
   52.41x = 3,040.15
5. Step 5: Solve for x
   x = 3,040.15/52.41
6. Step 6: Final answer
   x = 58.00