Finding the Fourth Proportional to 52.79, 72.82 and 42.41

Step by Step Solution

1. Step 1: Write the proportion equation
   52.79 : 72.82 = 42.41 : x
2. Step 2: Convert to fraction form
   52.79/72.82 = 42.41/x
3. Step 3: Cross multiply
   52.79x = 72.82 × 42.41
4. Step 4: Simplify right side
   52.79x = 3,088.30
5. Step 5: Solve for x
   x = 3,088.30/52.79
6. Step 6: Final answer
   x = 58.50