Finding the Fourth Proportional to 2,145,879,074.53, 2,961,339,814.21 and 1,299,095,156.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,879,074.53 : 2,961,339,814.21 = 1,299,095,156.89 : x
2. Step 2: Convert to fraction form
   2,145,879,074.53/2,961,339,814.21 = 1,299,095,156.89/x
3. Step 3: Cross multiply
   2,145,879,074.53x = 2,961,339,814.21 × 1,299,095,156.89
4. Step 4: Simplify right side
   2,145,879,074.53x = 3,847,062,210,530,936,832
5. Step 5: Solve for x
   x = 3,847,062,210,530,936,832/2,145,879,074.53
6. Step 6: Final answer
   x = 1,792,767,475.20