Finding the Fourth Proportional to 913,456,298.78, 1,260,570,908.71 and 495,768,584.06

Step by Step Solution

1. Step 1: Write the proportion equation
   913,456,298.78 : 1,260,570,908.71 = 495,768,584.06 : x
2. Step 2: Convert to fraction form
   913,456,298.78/1,260,570,908.71 = 495,768,584.06/x
3. Step 3: Cross multiply
   913,456,298.78x = 1,260,570,908.71 × 495,768,584.06
4. Step 4: Simplify right side
   913,456,298.78x = 624,951,454,518,384,256
5. Step 5: Solve for x
   x = 624,951,454,518,384,256/913,456,298.78
6. Step 6: Final answer
   x = 684,161,306.19