Finding the Fourth Proportional to 281,342.82, 388,253.39 and 154,018.71

Step by Step Solution

1. Step 1: Write the proportion equation
   281,342.82 : 388,253.39 = 154,018.71 : x
2. Step 2: Convert to fraction form
   281,342.82/388,253.39 = 154,018.71/x
3. Step 3: Cross multiply
   281,342.82x = 388,253.39 × 154,018.71
4. Step 4: Simplify right side
   281,342.82x = 59,798,285,510.83
5. Step 5: Solve for x
   x = 59,798,285,510.83/281,342.82
6. Step 6: Final answer
   x = 212,545.98