Finding the Fourth Proportional to 2,116,566,613.08, 3,174,644,625.72 and 642,719,172

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,566,613.08 : 3,174,644,625.72 = 642,719,172 : x
2. Step 2: Convert to fraction form
   2,116,566,613.08/3,174,644,625.72 = 642,719,172/x
3. Step 3: Cross multiply
   2,116,566,613.08x = 3,174,644,625.72 × 642,719,172
4. Step 4: Simplify right side
   2,116,566,613.08x = 2,040,404,965,237,008,128
5. Step 5: Solve for x
   x = 2,040,404,965,237,008,128/2,116,566,613.08
6. Step 6: Final answer
   x = 964,016,418.21