Finding the Fourth Proportional to 384,075.34, 529,944.83 and 220,700.28

Step by Step Solution

1. Step 1: Write the proportion equation
   384,075.34 : 529,944.83 = 220,700.28 : x
2. Step 2: Convert to fraction form
   384,075.34/529,944.83 = 220,700.28/x
3. Step 3: Cross multiply
   384,075.34x = 529,944.83 × 220,700.28
4. Step 4: Simplify right side
   384,075.34x = 116,958,972,365.55
5. Step 5: Solve for x
   x = 116,958,972,365.55/384,075.34
6. Step 6: Final answer
   x = 304,520.91