Finding the Fourth Proportional to 1,939,664,803.50, 2,909,522,399.49 and 647,200,291.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939,664,803.50 : 2,909,522,399.49 = 647,200,291.50 : x
2. Step 2: Convert to fraction form
   1,939,664,803.50/2,909,522,399.49 = 647,200,291.50/x
3. Step 3: Cross multiply
   1,939,664,803.50x = 2,909,522,399.49 × 647,200,291.50
4. Step 4: Simplify right side
   1,939,664,803.50x = 1,883,043,745,075,707,392
5. Step 5: Solve for x
   x = 1,883,043,745,075,707,392/1,939,664,803.50
6. Step 6: Final answer
   x = 970,808,843.71