Finding the Fourth Proportional to 281,868.54, 388,975.82 and 154,543.83

Step by Step Solution

1. Step 1: Write the proportion equation
   281,868.54 : 388,975.82 = 154,543.83 : x
2. Step 2: Convert to fraction form
   281,868.54/388,975.82 = 154,543.83/x
3. Step 3: Cross multiply
   281,868.54x = 388,975.82 × 154,543.83
4. Step 4: Simplify right side
   281,868.54x = 60,113,812,227.47
5. Step 5: Solve for x
   x = 60,113,812,227.47/281,868.54
6. Step 6: Final answer
   x = 213,268.97