Finding the Fourth Proportional to 415,620.72, 573,555.24 and 224,633.52

Step by Step Solution

1. Step 1: Write the proportion equation
   415,620.72 : 573,555.24 = 224,633.52 : x
2. Step 2: Convert to fraction form
   415,620.72/573,555.24 = 224,633.52/x
3. Step 3: Cross multiply
   415,620.72x = 573,555.24 × 224,633.52
4. Step 4: Simplify right side
   415,620.72x = 128,839,732,475.65
5. Step 5: Solve for x
   x = 128,839,732,475.65/415,620.72
6. Step 6: Final answer
   x = 309,993.53