Finding the Fourth Proportional to 282,005.82, 389,165.92 and 154,680.50

Step by Step Solution

1. Step 1: Write the proportion equation
   282,005.82 : 389,165.92 = 154,680.50 : x
2. Step 2: Convert to fraction form
   282,005.82/389,165.92 = 154,680.50/x
3. Step 3: Cross multiply
   282,005.82x = 389,165.92 × 154,680.50
4. Step 4: Simplify right side
   282,005.82x = 60,196,379,674.77
5. Step 5: Solve for x
   x = 60,196,379,674.77/282,005.82
6. Step 6: Final answer
   x = 213,457.93