Finding the Fourth Proportional to 51,078.56, 76,586.52 and 21,083.48

Step by Step Solution

1. Step 1: Write the proportion equation
   51,078.56 : 76,586.52 = 21,083.48 : x
2. Step 2: Convert to fraction form
   51,078.56/76,586.52 = 21,083.48/x
3. Step 3: Cross multiply
   51,078.56x = 76,586.52 × 21,083.48
4. Step 4: Simplify right side
   51,078.56x = 1,614,710,362.69
5. Step 5: Solve for x
   x = 1,614,710,362.69/51,078.56
6. Step 6: Final answer
   x = 31,612.29