Finding the Fourth Proportional to 453,061.32, 678,113.28 and 333,086.55

Step by Step Solution

1. Step 1: Write the proportion equation
   453,061.32 : 678,113.28 = 333,086.55 : x
2. Step 2: Convert to fraction form
   453,061.32/678,113.28 = 333,086.55/x
3. Step 3: Cross multiply
   453,061.32x = 678,113.28 × 333,086.55
4. Step 4: Simplify right side
   453,061.32x = 225,870,412,944.38
5. Step 5: Solve for x
   x = 225,870,412,944.38/453,061.32
6. Step 6: Final answer
   x = 498,542.70