Finding the Fourth Proportional to 43,490.78, 65,215.59 and 16,849.25

Step by Step Solution

1. Step 1: Write the proportion equation
   43,490.78 : 65,215.59 = 16,849.25 : x
2. Step 2: Convert to fraction form
   43,490.78/65,215.59 = 16,849.25/x
3. Step 3: Cross multiply
   43,490.78x = 65,215.59 × 16,849.25
4. Step 4: Simplify right side
   43,490.78x = 1,098,833,453.73
5. Step 5: Solve for x
   x = 1,098,833,453.73/43,490.78
6. Step 6: Final answer
   x = 25,265.90