Finding the Fourth Proportional to 557,667.86, 769,586.36 and 303,019.02

Step by Step Solution

1. Step 1: Write the proportion equation
   557,667.86 : 769,586.36 = 303,019.02 : x
2. Step 2: Convert to fraction form
   557,667.86/769,586.36 = 303,019.02/x
3. Step 3: Cross multiply
   557,667.86x = 769,586.36 × 303,019.02
4. Step 4: Simplify right side
   557,667.86x = 233,199,303,097.47
5. Step 5: Solve for x
   x = 233,199,303,097.47/557,667.86
6. Step 6: Final answer
   x = 418,168.81