Finding the Fourth Proportional to 339,667.98, 509,513.31 and 152,680.02

Step by Step Solution

1. Step 1: Write the proportion equation
   339,667.98 : 509,513.31 = 152,680.02 : x
2. Step 2: Convert to fraction form
   339,667.98/509,513.31 = 152,680.02/x
3. Step 3: Cross multiply
   339,667.98x = 509,513.31 × 152,680.02
4. Step 4: Simplify right side
   339,667.98x = 77,792,502,361.07
5. Step 5: Solve for x
   x = 77,792,502,361.07/339,667.98
6. Step 6: Final answer
   x = 229,025.13