Finding the Fourth Proportional to 1,978,724,858.10, 2,971,016,117.55 and 1,107,067,139.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,724,858.10 : 2,971,016,117.55 = 1,107,067,139.70 : x
2. Step 2: Convert to fraction form
   1,978,724,858.10/2,971,016,117.55 = 1,107,067,139.70/x
3. Step 3: Cross multiply
   1,978,724,858.10x = 2,971,016,117.55 × 1,107,067,139.70
4. Step 4: Simplify right side
   1,978,724,858.10x = 3,289,114,315,258,677,760
5. Step 5: Solve for x
   x = 3,289,114,315,258,677,760/1,978,724,858.10
6. Step 6: Final answer
   x = 1,662,239,346.61