Finding the Fourth Proportional to 282,451.34, 389,801.94 and 155,128.25

Step by Step Solution

1. Step 1: Write the proportion equation
   282,451.34 : 389,801.94 = 155,128.25 : x
2. Step 2: Convert to fraction form
   282,451.34/389,801.94 = 155,128.25/x
3. Step 3: Cross multiply
   282,451.34x = 389,801.94 × 155,128.25
4. Step 4: Simplify right side
   282,451.34x = 60,469,293,191.58
5. Step 5: Solve for x
   x = 60,469,293,191.58/282,451.34
6. Step 6: Final answer
   x = 214,087.47