Finding the Fourth Proportional to 51,665.75, 71,290.24 and 30,442.13

Step by Step Solution

1. Step 1: Write the proportion equation
   51,665.75 : 71,290.24 = 30,442.13 : x
2. Step 2: Convert to fraction form
   51,665.75/71,290.24 = 30,442.13/x
3. Step 3: Cross multiply
   51,665.75x = 71,290.24 × 30,442.13
4. Step 4: Simplify right side
   51,665.75x = 2,170,226,759.83
5. Step 5: Solve for x
   x = 2,170,226,759.83/51,665.75
6. Step 6: Final answer
   x = 42,005.14