Finding the Fourth Proportional to 52.24, 72.06 and 42.56

Step by Step Solution

1. Step 1: Write the proportion equation
   52.24 : 72.06 = 42.56 : x
2. Step 2: Convert to fraction form
   52.24/72.06 = 42.56/x
3. Step 3: Cross multiply
   52.24x = 72.06 × 42.56
4. Step 4: Simplify right side
   52.24x = 3,066.87
5. Step 5: Solve for x
   x = 3,066.87/52.24
6. Step 6: Final answer
   x = 58.71