Finding the Fourth Proportional to 442,942.24, 611,238.72 and 249,338.56

Step by Step Solution

1. Step 1: Write the proportion equation
   442,942.24 : 611,238.72 = 249,338.56 : x
2. Step 2: Convert to fraction form
   442,942.24/611,238.72 = 249,338.56/x
3. Step 3: Cross multiply
   442,942.24x = 611,238.72 × 249,338.56
4. Step 4: Simplify right side
   442,942.24x = 152,405,382,261.04
5. Step 5: Solve for x
   x = 152,405,382,261.04/442,942.24
6. Step 6: Final answer
   x = 344,075.07