Finding the Fourth Proportional to 2,105,865,500.85, 2,909,121,435.63 and 1,681,922,559.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,865,500.85 : 2,909,121,435.63 = 1,681,922,559.39 : x
2. Step 2: Convert to fraction form
   2,105,865,500.85/2,909,121,435.63 = 1,681,922,559.39/x
3. Step 3: Cross multiply
   2,105,865,500.85x = 2,909,121,435.63 × 1,681,922,559.39
4. Step 4: Simplify right side
   2,105,865,500.85x = 4,892,916,970,591,121,408
5. Step 5: Solve for x
   x = 4,892,916,970,591,121,408/2,105,865,500.85
6. Step 6: Final answer
   x = 2,323,470,786.06