Finding the Fourth Proportional to 281,896.38, 389,016.72 and 154,574.10

Step by Step Solution

1. Step 1: Write the proportion equation
   281,896.38 : 389,016.72 = 154,574.10 : x
2. Step 2: Convert to fraction form
   281,896.38/389,016.72 = 154,574.10/x
3. Step 3: Cross multiply
   281,896.38x = 389,016.72 × 154,574.10
4. Step 4: Simplify right side
   281,896.38x = 60,131,909,378.95
5. Step 5: Solve for x
   x = 60,131,909,378.95/281,896.38
6. Step 6: Final answer
   x = 213,312.10