Finding the Fourth Proportional to 448,942.50, 673,524.72 and 133,398.09

Step by Step Solution

1. Step 1: Write the proportion equation
   448,942.50 : 673,524.72 = 133,398.09 : x
2. Step 2: Convert to fraction form
   448,942.50/673,524.72 = 133,398.09/x
3. Step 3: Cross multiply
   448,942.50x = 673,524.72 × 133,398.09
4. Step 4: Simplify right side
   448,942.50x = 89,846,911,215.78
5. Step 5: Solve for x
   x = 89,846,911,215.78/448,942.50
6. Step 6: Final answer
   x = 200,130.11