Finding the Fourth Proportional to 51,131.07, 70,560.18 and 28,469.43

Step by Step Solution

1. Step 1: Write the proportion equation
   51,131.07 : 70,560.18 = 28,469.43 : x
2. Step 2: Convert to fraction form
   51,131.07/70,560.18 = 28,469.43/x
3. Step 3: Cross multiply
   51,131.07x = 70,560.18 × 28,469.43
4. Step 4: Simplify right side
   51,131.07x = 2,008,808,105.30
5. Step 5: Solve for x
   x = 2,008,808,105.30/51,131.07
6. Step 6: Final answer
   x = 39,287.43