Finding the Fourth Proportional to 558,111.36, 770,189.76 and 303,462.72

Step by Step Solution

1. Step 1: Write the proportion equation
   558,111.36 : 770,189.76 = 303,462.72 : x
2. Step 2: Convert to fraction form
   558,111.36/770,189.76 = 303,462.72/x
3. Step 3: Cross multiply
   558,111.36x = 770,189.76 × 303,462.72
4. Step 4: Simplify right side
   558,111.36x = 233,723,879,485.75
5. Step 5: Solve for x
   x = 233,723,879,485.75/558,111.36
6. Step 6: Final answer
   x = 418,776.42