Finding the Fourth Proportional to 538,704, 743,434.56 and 300,240

Step by Step Solution

1. Step 1: Write the proportion equation
   538,704 : 743,434.56 = 300,240 : x
2. Step 2: Convert to fraction form
   538,704/743,434.56 = 300,240/x
3. Step 3: Cross multiply
   538,704x = 743,434.56 × 300,240
4. Step 4: Simplify right side
   538,704x = 223,208,792,294.40
5. Step 5: Solve for x
   x = 223,208,792,294.40/538,704
6. Step 6: Final answer
   x = 414,344.04