Finding the Fourth Proportional to 281,786.54, 388,875.39 and 154,462.10

Step by Step Solution

1. Step 1: Write the proportion equation
   281,786.54 : 388,875.39 = 154,462.10 : x
2. Step 2: Convert to fraction form
   281,786.54/388,875.39 = 154,462.10/x
3. Step 3: Cross multiply
   281,786.54x = 388,875.39 × 154,462.10
4. Step 4: Simplify right side
   281,786.54x = 60,066,509,377.72
5. Step 5: Solve for x
   x = 60,066,509,377.72/281,786.54
6. Step 6: Final answer
   x = 213,163.16