Finding the Fourth Proportional to 281,839.72, 388,938.72 and 154,512.58

Step by Step Solution

1. Step 1: Write the proportion equation
   281,839.72 : 388,938.72 = 154,512.58 : x
2. Step 2: Convert to fraction form
   281,839.72/388,938.72 = 154,512.58/x
3. Step 3: Cross multiply
   281,839.72x = 388,938.72 × 154,512.58
4. Step 4: Simplify right side
   281,839.72x = 60,095,925,089.10
5. Step 5: Solve for x
   x = 60,095,925,089.10/281,839.72
6. Step 6: Final answer
   x = 213,227.31