Finding the Fourth Proportional to 51,411.99, 70,945.59 and 28,440.43

Step by Step Solution

1. Step 1: Write the proportion equation
   51,411.99 : 70,945.59 = 28,440.43 : x
2. Step 2: Convert to fraction form
   51,411.99/70,945.59 = 28,440.43/x
3. Step 3: Cross multiply
   51,411.99x = 70,945.59 × 28,440.43
4. Step 4: Simplify right side
   51,411.99x = 2,017,723,086.20
5. Step 5: Solve for x
   x = 2,017,723,086.20/51,411.99
6. Step 6: Final answer
   x = 39,246.16