Finding the Fourth Proportional to 65,108.82, 89,835.57 and 39,628.38

Step by Step Solution

1. Step 1: Write the proportion equation
   65,108.82 : 89,835.57 = 39,628.38 : x
2. Step 2: Convert to fraction form
   65,108.82/89,835.57 = 39,628.38/x
3. Step 3: Cross multiply
   65,108.82x = 89,835.57 × 39,628.38
4. Step 4: Simplify right side
   65,108.82x = 3,560,038,105.48
5. Step 5: Solve for x
   x = 3,560,038,105.48/65,108.82
6. Step 6: Final answer
   x = 54,678.28