Finding the Fourth Proportional to 434,399.94, 599,116.50 and 305,764.25

Step by Step Solution

1. Step 1: Write the proportion equation
   434,399.94 : 599,116.50 = 305,764.25 : x
2. Step 2: Convert to fraction form
   434,399.94/599,116.50 = 305,764.25/x
3. Step 3: Cross multiply
   434,399.94x = 599,116.50 × 305,764.25
4. Step 4: Simplify right side
   434,399.94x = 183,188,404,289.54
5. Step 5: Solve for x
   x = 183,188,404,289.54/434,399.94
6. Step 6: Final answer
   x = 421,704.49