Finding the Fourth Proportional to 282,493.72, 389,842.50 and 155,171.80

Step by Step Solution

1. Step 1: Write the proportion equation
   282,493.72 : 389,842.50 = 155,171.80 : x
2. Step 2: Convert to fraction form
   282,493.72/389,842.50 = 155,171.80/x
3. Step 3: Cross multiply
   282,493.72x = 389,842.50 × 155,171.80
4. Step 4: Simplify right side
   282,493.72x = 60,492,562,441.50
5. Step 5: Solve for x
   x = 60,492,562,441.50/282,493.72
6. Step 6: Final answer
   x = 214,137.72