Finding the Fourth Proportional to 679,300,169.98, 1,018,753,219.23 and 264,684,510.94

Step by Step Solution

1. Step 1: Write the proportion equation
   679,300,169.98 : 1,018,753,219.23 = 264,684,510.94 : x
2. Step 2: Convert to fraction form
   679,300,169.98/1,018,753,219.23 = 264,684,510.94/x
3. Step 3: Cross multiply
   679,300,169.98x = 1,018,753,219.23 × 264,684,510.94
4. Step 4: Simplify right side
   679,300,169.98x = 269,648,197,600,443,168
5. Step 5: Solve for x
   x = 269,648,197,600,443,168/679,300,169.98
6. Step 6: Final answer
   x = 396,949,992.83