Finding the Fourth Proportional to 2,055,947,406.55, 3,078,891,578.68 and 1,856,973,654.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055,947,406.55 : 3,078,891,578.68 = 1,856,973,654.47 : x
2. Step 2: Convert to fraction form
   2,055,947,406.55/3,078,891,578.68 = 1,856,973,654.47/x
3. Step 3: Cross multiply
   2,055,947,406.55x = 3,078,891,578.68 × 1,856,973,654.47
4. Step 4: Simplify right side
   2,055,947,406.55x = 5,717,420,546,578,307,072
5. Step 5: Solve for x
   x = 5,717,420,546,578,307,072/2,055,947,406.55
6. Step 6: Final answer
   x = 2,780,917,706.53