Finding the Fourth Proportional to 15,123,812,469.39, 22,685,407,177.94 and 5,040,257,667.21

Step by Step Solution

1. Step 1: Write the proportion equation
   15,123,812,469.39 : 22,685,407,177.94 = 5,040,257,667.21 : x
2. Step 2: Convert to fraction form
   15,123,812,469.39/22,685,407,177.94 = 5,040,257,667.21/x
3. Step 3: Cross multiply
   15,123,812,469.39x = 22,685,407,177.94 × 5,040,257,667.21
4. Step 4: Simplify right side
   15,123,812,469.39x = 114,340,297,462,392,848,384
5. Step 5: Solve for x
   x = 114,340,297,462,392,848,384/15,123,812,469.39
6. Step 6: Final answer
   x = 7,560,282,679.64