Finding the Fourth Proportional to 404,721.42, 558,516.50 and 223,433.48

Step by Step Solution

1. Step 1: Write the proportion equation
   404,721.42 : 558,516.50 = 223,433.48 : x
2. Step 2: Convert to fraction form
   404,721.42/558,516.50 = 223,433.48/x
3. Step 3: Cross multiply
   404,721.42x = 558,516.50 × 223,433.48
4. Step 4: Simplify right side
   404,721.42x = 124,791,281,322.67
5. Step 5: Solve for x
   x = 124,791,281,322.67/404,721.42
6. Step 6: Final answer
   x = 308,338.71