Finding the Fourth Proportional to 2,019,400,380.90, 3,029,210,795.97 and 639,111,897.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019,400,380.90 : 3,029,210,795.97 = 639,111,897.54 : x
2. Step 2: Convert to fraction form
   2,019,400,380.90/3,029,210,795.97 = 639,111,897.54/x
3. Step 3: Cross multiply
   2,019,400,380.90x = 3,029,210,795.97 × 639,111,897.54
4. Step 4: Simplify right side
   2,019,400,380.90x = 1,936,004,659,861,040,128
5. Step 5: Solve for x
   x = 1,936,004,659,861,040,128/2,019,400,380.90
6. Step 6: Final answer
   x = 958,702,730.86