Finding the Fourth Proportional to 115,743.08, 159,728.82 and 65,441

Step by Step Solution

1. Step 1: Write the proportion equation
   115,743.08 : 159,728.82 = 65,441 : x
2. Step 2: Convert to fraction form
   115,743.08/159,728.82 = 65,441/x
3. Step 3: Cross multiply
   115,743.08x = 159,728.82 × 65,441
4. Step 4: Simplify right side
   115,743.08x = 10,452,813,709.62
5. Step 5: Solve for x
   x = 10,452,813,709.62/115,743.08
6. Step 6: Final answer
   x = 90,310.49