Finding the Fourth Proportional to 2,590,767,426.72, 3,886,162,470.12 and 820,146,791.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590,767,426.72 : 3,886,162,470.12 = 820,146,791.22 : x
2. Step 2: Convert to fraction form
   2,590,767,426.72/3,886,162,470.12 = 820,146,791.22/x
3. Step 3: Cross multiply
   2,590,767,426.72x = 3,886,162,470.12 × 820,146,791.22
4. Step 4: Simplify right side
   2,590,767,426.72x = 3,187,223,680,028,507,136
5. Step 5: Solve for x
   x = 3,187,223,680,028,507,136/2,590,767,426.72
6. Step 6: Final answer
   x = 1,230,223,773.53