Finding the Fourth Proportional to 443,465.82, 665,364.06 and 266,100.12

Step by Step Solution

1. Step 1: Write the proportion equation
   443,465.82 : 665,364.06 = 266,100.12 : x
2. Step 2: Convert to fraction form
   443,465.82/665,364.06 = 266,100.12/x
3. Step 3: Cross multiply
   443,465.82x = 665,364.06 × 266,100.12
4. Step 4: Simplify right side
   443,465.82x = 177,053,456,209.69
5. Step 5: Solve for x
   x = 177,053,456,209.69/443,465.82
6. Step 6: Final answer
   x = 399,249.39