Finding the Fourth Proportional to 52.34, 72.18 and 42.49

Step by Step Solution

1. Step 1: Write the proportion equation
   52.34 : 72.18 = 42.49 : x
2. Step 2: Convert to fraction form
   52.34/72.18 = 42.49/x
3. Step 3: Cross multiply
   52.34x = 72.18 × 42.49
4. Step 4: Simplify right side
   52.34x = 3,066.75
5. Step 5: Solve for x
   x = 3,066.75/52.34
6. Step 6: Final answer
   x = 58.59