Finding the Fourth Proportional to 105,723, 145,884.33 and 57,963.78

Step by Step Solution

1. Step 1: Write the proportion equation
   105,723 : 145,884.33 = 57,963.78 : x
2. Step 2: Convert to fraction form
   105,723/145,884.33 = 57,963.78/x
3. Step 3: Cross multiply
   105,723x = 145,884.33 × 57,963.78
4. Step 4: Simplify right side
   105,723x = 8,456,007,209.57
5. Step 5: Solve for x
   x = 8,456,007,209.57/105,723
6. Step 6: Final answer
   x = 79,982.66