Finding the Fourth Proportional to 65,687.58, 89,992.32 and 63,227.57

Step by Step Solution

1. Step 1: Write the proportion equation
   65,687.58 : 89,992.32 = 63,227.57 : x
2. Step 2: Convert to fraction form
   65,687.58/89,992.32 = 63,227.57/x
3. Step 3: Cross multiply
   65,687.58x = 89,992.32 × 63,227.57
4. Step 4: Simplify right side
   65,687.58x = 5,689,995,025.20
5. Step 5: Solve for x
   x = 5,689,995,025.20/65,687.58
6. Step 6: Final answer
   x = 86,622.08