Finding the Fourth Proportional to 3,388,513,992.78, 4,674,698,789.34 and 2,116,146,036.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,388,513,992.78 : 4,674,698,789.34 = 2,116,146,036.15 : x
2. Step 2: Convert to fraction form
   3,388,513,992.78/4,674,698,789.34 = 2,116,146,036.15/x
3. Step 3: Cross multiply
   3,388,513,992.78x = 4,674,698,789.34 × 2,116,146,036.15
4. Step 4: Simplify right side
   3,388,513,992.78x = 9,892,345,313,257,046,016
5. Step 5: Solve for x
   x = 9,892,345,313,257,046,016/3,388,513,992.78
6. Step 6: Final answer
   x = 2,919,375,671.56