Finding the Fourth Proportional to 2,664,142,642,439, 3,995,741,580,200.20 and 1,211,665,088,609

Step by Step Solution

1. Step 1: Write the proportion equation
   2,664,142,642,439 : 3,995,741,580,200.20 = 1,211,665,088,609 : x
2. Step 2: Convert to fraction form
   2,664,142,642,439/3,995,741,580,200.20 = 1,211,665,088,609/x
3. Step 3: Cross multiply
   2,664,142,642,439x = 3,995,741,580,200.20 × 1,211,665,088,609
4. Step 4: Simplify right side
   2,664,142,642,439x = 4,841,500,575,831,940,923,392,000
5. Step 5: Solve for x
   x = 4,841,500,575,831,940,923,392,000/2,664,142,642,439
6. Step 6: Final answer
   x = 1,817,282,790,608.99