Finding the Fourth Proportional to 2,087,743,120.72, 3,129,546,139.74 and 980,365,662.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087,743,120.72 : 3,129,546,139.74 = 980,365,662.88 : x
2. Step 2: Convert to fraction form
   2,087,743,120.72/3,129,546,139.74 = 980,365,662.88/x
3. Step 3: Cross multiply
   2,087,743,120.72x = 3,129,546,139.74 × 980,365,662.88
4. Step 4: Simplify right side
   2,087,743,120.72x = 3,068,099,575,799,750,144
5. Step 5: Solve for x
   x = 3,068,099,575,799,750,144/2,087,743,120.72
6. Step 6: Final answer
   x = 1,469,577,145.46