Finding the Fourth Proportional to 51,560.02, 71,154.78 and 28,899.43

Step by Step Solution

1. Step 1: Write the proportion equation
   51,560.02 : 71,154.78 = 28,899.43 : x
2. Step 2: Convert to fraction form
   51,560.02/71,154.78 = 28,899.43/x
3. Step 3: Cross multiply
   51,560.02x = 71,154.78 × 28,899.43
4. Step 4: Simplify right side
   51,560.02x = 2,056,332,405.89
5. Step 5: Solve for x
   x = 2,056,332,405.89/51,560.02
6. Step 6: Final answer
   x = 39,882.31