Finding the Fourth Proportional to 1,015,155,491.73, 1,401,373,608.78 and 639,364,358.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015,155,491.73 : 1,401,373,608.78 = 639,364,358.82 : x
2. Step 2: Convert to fraction form
   1,015,155,491.73/1,401,373,608.78 = 639,364,358.82/x
3. Step 3: Cross multiply
   1,015,155,491.73x = 1,401,373,608.78 × 639,364,358.82
4. Step 4: Simplify right side
   1,015,155,491.73x = 895,988,338,844,894,336
5. Step 5: Solve for x
   x = 895,988,338,844,894,336/1,015,155,491.73
6. Step 6: Final answer
   x = 882,611,921.17