Finding the Fourth Proportional to 51,084.49, 70,495.91 and 28,728.49

Step by Step Solution

1. Step 1: Write the proportion equation
   51,084.49 : 70,495.91 = 28,728.49 : x
2. Step 2: Convert to fraction form
   51,084.49/70,495.91 = 28,728.49/x
3. Step 3: Cross multiply
   51,084.49x = 70,495.91 × 28,728.49
4. Step 4: Simplify right side
   51,084.49x = 2,025,240,764.82
5. Step 5: Solve for x
   x = 2,025,240,764.82/51,084.49
6. Step 6: Final answer
   x = 39,644.93