Finding the Fourth Proportional to 2,061,867,967.09, 2,845,471,492.59 and 1,215,131,026.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061,867,967.09 : 2,845,471,492.59 = 1,215,131,026.21 : x
2. Step 2: Convert to fraction form
   2,061,867,967.09/2,845,471,492.59 = 1,215,131,026.21/x
3. Step 3: Cross multiply
   2,061,867,967.09x = 2,845,471,492.59 × 1,215,131,026.21
4. Step 4: Simplify right side
   2,061,867,967.09x = 3,457,620,694,830,456,320
5. Step 5: Solve for x
   x = 3,457,620,694,830,456,320/2,061,867,967.09
6. Step 6: Final answer
   x = 1,676,936,035.68