Finding the Fourth Proportional to 281,681.34, 388,729.72 and 154,355.82

Step by Step Solution

1. Step 1: Write the proportion equation
   281,681.34 : 388,729.72 = 154,355.82 : x
2. Step 2: Convert to fraction form
   281,681.34/388,729.72 = 154,355.82/x
3. Step 3: Cross multiply
   281,681.34x = 388,729.72 × 154,355.82
4. Step 4: Simplify right side
   281,681.34x = 60,002,694,688.97
5. Step 5: Solve for x
   x = 60,002,694,688.97/281,681.34
6. Step 6: Final answer
   x = 213,016.22