Finding the Fourth Proportional to 866,585,152.73, 1,195,887,510.74 and 495,315,155.72

Step by Step Solution

1. Step 1: Write the proportion equation
   866,585,152.73 : 1,195,887,510.74 = 495,315,155.72 : x
2. Step 2: Convert to fraction form
   866,585,152.73/1,195,887,510.74 = 495,315,155.72/x
3. Step 3: Cross multiply
   866,585,152.73x = 1,195,887,510.74 × 495,315,155.72
4. Step 4: Simplify right side
   866,585,152.73x = 592,341,208,610,014,336
5. Step 5: Solve for x
   x = 592,341,208,610,014,336/866,585,152.73
6. Step 6: Final answer
   x = 683,534,914.88