Finding the Fourth Proportional to 52.10, 71.94 and 42.38

Step by Step Solution

1. Step 1: Write the proportion equation
   52.10 : 71.94 = 42.38 : x
2. Step 2: Convert to fraction form
   52.10/71.94 = 42.38/x
3. Step 3: Cross multiply
   52.10x = 71.94 × 42.38
4. Step 4: Simplify right side
   52.10x = 3,048.25
5. Step 5: Solve for x
   x = 3,048.25/52.10
6. Step 6: Final answer
   x = 58.51