Finding the Fourth Proportional to 51,815.76, 71,506.12 and 30,605.52

Step by Step Solution

1. Step 1: Write the proportion equation
   51,815.76 : 71,506.12 = 30,605.52 : x
2. Step 2: Convert to fraction form
   51,815.76/71,506.12 = 30,605.52/x
3. Step 3: Cross multiply
   51,815.76x = 71,506.12 × 30,605.52
4. Step 4: Simplify right side
   51,815.76x = 2,188,481,985.78
5. Step 5: Solve for x
   x = 2,188,481,985.78/51,815.76
6. Step 6: Final answer
   x = 42,235.84