Finding the Fourth Proportional to 407,667.31, 562,584.82 and 237,868.63

Step by Step Solution

1. Step 1: Write the proportion equation
   407,667.31 : 562,584.82 = 237,868.63 : x
2. Step 2: Convert to fraction form
   407,667.31/562,584.82 = 237,868.63/x
3. Step 3: Cross multiply
   407,667.31x = 562,584.82 × 237,868.63
4. Step 4: Simplify right side
   407,667.31x = 133,821,280,392.20
5. Step 5: Solve for x
   x = 133,821,280,392.20/407,667.31
6. Step 6: Final answer
   x = 328,261.00