Finding the Fourth Proportional to 51,275.31, 70,759.94 and 28,305.15

Step by Step Solution

1. Step 1: Write the proportion equation
   51,275.31 : 70,759.94 = 28,305.15 : x
2. Step 2: Convert to fraction form
   51,275.31/70,759.94 = 28,305.15/x
3. Step 3: Cross multiply
   51,275.31x = 70,759.94 × 28,305.15
4. Step 4: Simplify right side
   51,275.31x = 2,002,870,574.17
5. Step 5: Solve for x
   x = 2,002,870,574.17/51,275.31
6. Step 6: Final answer
   x = 39,061.11