Finding the Fourth Proportional to 281,921.98, 389,057.67 and 154,589.98

Step by Step Solution

1. Step 1: Write the proportion equation
   281,921.98 : 389,057.67 = 154,589.98 : x
2. Step 2: Convert to fraction form
   281,921.98/389,057.67 = 154,589.98/x
3. Step 3: Cross multiply
   281,921.98x = 389,057.67 × 154,589.98
4. Step 4: Simplify right side
   281,921.98x = 60,144,417,424.15
5. Step 5: Solve for x
   x = 60,144,417,424.15/281,921.98
6. Step 6: Final answer
   x = 213,337.10