Finding the Fourth Proportional to 2,139,967,113.56, 2,942,682,451.65 and 1,857,218,672.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,967,113.56 : 2,942,682,451.65 = 1,857,218,672.22 : x
2. Step 2: Convert to fraction form
   2,139,967,113.56/2,942,682,451.65 = 1,857,218,672.22/x
3. Step 3: Cross multiply
   2,139,967,113.56x = 2,942,682,451.65 × 1,857,218,672.22
4. Step 4: Simplify right side
   2,139,967,113.56x = 5,465,204,795,618,507,776
5. Step 5: Solve for x
   x = 5,465,204,795,618,507,776/2,139,967,113.56
6. Step 6: Final answer
   x = 2,553,873,263.28