Finding the Fourth Proportional to 65,078.82, 89,754.20 and 51,628.76

Step by Step Solution

1. Step 1: Write the proportion equation
   65,078.82 : 89,754.20 = 51,628.76 : x
2. Step 2: Convert to fraction form
   65,078.82/89,754.20 = 51,628.76/x
3. Step 3: Cross multiply
   65,078.82x = 89,754.20 × 51,628.76
4. Step 4: Simplify right side
   65,078.82x = 4,633,898,050.79
5. Step 5: Solve for x
   x = 4,633,898,050.79/65,078.82
6. Step 6: Final answer
   x = 71,204.40