Finding the Fourth Proportional to 312,665,808.78, 469,002,704.49 and 82,632,906.06

Step by Step Solution

1. Step 1: Write the proportion equation
   312,665,808.78 : 469,002,704.49 = 82,632,906.06 : x
2. Step 2: Convert to fraction form
   312,665,808.78/469,002,704.49 = 82,632,906.06/x
3. Step 3: Cross multiply
   312,665,808.78x = 469,002,704.49 × 82,632,906.06
4. Step 4: Simplify right side
   312,665,808.78x = 38,755,056,422,008,112
5. Step 5: Solve for x
   x = 38,755,056,422,008,112/312,665,808.78
6. Step 6: Final answer
   x = 123,950,413.94