Finding the Fourth Proportional to 64,978.96, 89,665.96 and 36,687.44

Step by Step Solution

1. Step 1: Write the proportion equation
   64,978.96 : 89,665.96 = 36,687.44 : x
2. Step 2: Convert to fraction form
   64,978.96/89,665.96 = 36,687.44/x
3. Step 3: Cross multiply
   64,978.96x = 89,665.96 × 36,687.44
4. Step 4: Simplify right side
   64,978.96x = 3,289,614,527.54
5. Step 5: Solve for x
   x = 3,289,614,527.54/64,978.96
6. Step 6: Final answer
   x = 50,625.84