Finding the Fourth Proportional to 281,756.94, 388,824.56 and 154,429.80

Step by Step Solution

1. Step 1: Write the proportion equation
   281,756.94 : 388,824.56 = 154,429.80 : x
2. Step 2: Convert to fraction form
   281,756.94/388,824.56 = 154,429.80/x
3. Step 3: Cross multiply
   281,756.94x = 388,824.56 × 154,429.80
4. Step 4: Simplify right side
   281,756.94x = 60,046,099,035.89
5. Step 5: Solve for x
   x = 60,046,099,035.89/281,756.94
6. Step 6: Final answer
   x = 213,113.11