Finding the Fourth Proportional to 1,570,562,677.98, 2,355,823,837.71 and 521,783,129.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570,562,677.98 : 2,355,823,837.71 = 521,783,129.25 : x
2. Step 2: Convert to fraction form
   1,570,562,677.98/2,355,823,837.71 = 521,783,129.25/x
3. Step 3: Cross multiply
   1,570,562,677.98x = 2,355,823,837.71 × 521,783,129.25
4. Step 4: Simplify right side
   1,570,562,677.98x = 1,229,229,134,002,067,968
5. Step 5: Solve for x
   x = 1,229,229,134,002,067,968/1,570,562,677.98
6. Step 6: Final answer
   x = 782,667,989.78