Finding the Fourth Proportional to 557,662, 769,577.16 and 303,013.12

Step by Step Solution

1. Step 1: Write the proportion equation
   557,662 : 769,577.16 = 303,013.12 : x
2. Step 2: Convert to fraction form
   557,662/769,577.16 = 303,013.12/x
3. Step 3: Cross multiply
   557,662x = 769,577.16 × 303,013.12
4. Step 4: Simplify right side
   557,662x = 233,191,976,332.34
5. Step 5: Solve for x
   x = 233,191,976,332.34/557,662
6. Step 6: Final answer
   x = 418,160.06