Finding the Fourth Proportional to 20,756,667.84, 31,135,112.60 and 13,613,436.48

Step by Step Solution

1. Step 1: Write the proportion equation
   20,756,667.84 : 31,135,112.60 = 13,613,436.48 : x
2. Step 2: Convert to fraction form
   20,756,667.84/31,135,112.60 = 13,613,436.48/x
3. Step 3: Cross multiply
   20,756,667.84x = 31,135,112.60 × 13,613,436.48
4. Step 4: Simplify right side
   20,756,667.84x = 423,855,877,677,747.69
5. Step 5: Solve for x
   x = 423,855,877,677,747.69/20,756,667.84
6. Step 6: Final answer
   x = 20,420,227.42