Finding the Fourth Proportional to 51,279.42, 70,763.31 and 28,617.18

Step by Step Solution

1. Step 1: Write the proportion equation
   51,279.42 : 70,763.31 = 28,617.18 : x
2. Step 2: Convert to fraction form
   51,279.42/70,763.31 = 28,617.18/x
3. Step 3: Cross multiply
   51,279.42x = 70,763.31 × 28,617.18
4. Step 4: Simplify right side
   51,279.42x = 2,025,046,379.67
5. Step 5: Solve for x
   x = 2,025,046,379.67/51,279.42
6. Step 6: Final answer
   x = 39,490.43