Finding the Fourth Proportional to 773,212,003.16, 1,067,257,410.28 and 505,328,134.35

Step by Step Solution

1. Step 1: Write the proportion equation
   773,212,003.16 : 1,067,257,410.28 = 505,328,134.35 : x
2. Step 2: Convert to fraction form
   773,212,003.16/1,067,257,410.28 = 505,328,134.35/x
3. Step 3: Cross multiply
   773,212,003.16x = 1,067,257,410.28 × 505,328,134.35
4. Step 4: Simplify right side
   773,212,003.16x = 539,315,196,008,004,928
5. Step 5: Solve for x
   x = 539,315,196,008,004,928/773,212,003.16
6. Step 6: Final answer
   x = 697,499,772.12