Finding the Fourth Proportional to 51.82, 71.48 and 42.04

Step by Step Solution

1. Step 1: Write the proportion equation
   51.82 : 71.48 = 42.04 : x
2. Step 2: Convert to fraction form
   51.82/71.48 = 42.04/x
3. Step 3: Cross multiply
   51.82x = 71.48 × 42.04
4. Step 4: Simplify right side
   51.82x = 3,005.02
5. Step 5: Solve for x
   x = 3,005.02/51.82
6. Step 6: Final answer
   x = 57.99