Finding the Fourth Proportional to 2,664,142,642,435, 3,995,741,580,194.20 and 1,211,665,088,605

Step by Step Solution

1. Step 1: Write the proportion equation
   2,664,142,642,435 : 3,995,741,580,194.20 = 1,211,665,088,605 : x
2. Step 2: Convert to fraction form
   2,664,142,642,435/3,995,741,580,194.20 = 1,211,665,088,605/x
3. Step 3: Cross multiply
   2,664,142,642,435x = 3,995,741,580,194.20 × 1,211,665,088,605
4. Step 4: Simplify right side
   2,664,142,642,435x = 4,841,500,575,808,687,970,451,456
5. Step 5: Solve for x
   x = 4,841,500,575,808,687,970,451,456/2,664,142,642,435
6. Step 6: Final answer
   x = 1,817,282,790,602.99