Finding the Fourth Proportional to 2,614,213,667.91, 3,921,318,105.96 and 819,440,131.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,614,213,667.91 : 3,921,318,105.96 = 819,440,131.79 : x
2. Step 2: Convert to fraction form
   2,614,213,667.91/3,921,318,105.96 = 819,440,131.79/x
3. Step 3: Cross multiply
   2,614,213,667.91x = 3,921,318,105.96 × 819,440,131.79
4. Step 4: Simplify right side
   2,614,213,667.91x = 3,213,285,425,518,768,640
5. Step 5: Solve for x
   x = 3,213,285,425,518,768,640/2,614,213,667.91
6. Step 6: Final answer
   x = 1,229,159,446.67