Finding the Fourth Proportional to 665,533.69, 918,436.50 and 363,727.69

Step by Step Solution

1. Step 1: Write the proportion equation
   665,533.69 : 918,436.50 = 363,727.69 : x
2. Step 2: Convert to fraction form
   665,533.69/918,436.50 = 363,727.69/x
3. Step 3: Cross multiply
   665,533.69x = 918,436.50 × 363,727.69
4. Step 4: Simplify right side
   665,533.69x = 334,060,784,260.59
5. Step 5: Solve for x
   x = 334,060,784,260.59/665,533.69
6. Step 6: Final answer
   x = 501,944.21