Finding the Fourth Proportional to 1,621,047,308.58, 2,237,047,198.38 and 878,491,371.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,047,308.58 : 2,237,047,198.38 = 878,491,371.33 : x
2. Step 2: Convert to fraction form
   1,621,047,308.58/2,237,047,198.38 = 878,491,371.33/x
3. Step 3: Cross multiply
   1,621,047,308.58x = 2,237,047,198.38 × 878,491,371.33
4. Step 4: Simplify right side
   1,621,047,308.58x = 1,965,226,661,034,780,928
5. Step 5: Solve for x
   x = 1,965,226,661,034,780,928/1,621,047,308.58
6. Step 6: Final answer
   x = 1,212,319,128.89