Finding the Fourth Proportional to 282,912.52, 390,410.34 and 155,587.72

Step by Step Solution

1. Step 1: Write the proportion equation
   282,912.52 : 390,410.34 = 155,587.72 : x
2. Step 2: Convert to fraction form
   282,912.52/390,410.34 = 155,587.72/x
3. Step 3: Cross multiply
   282,912.52x = 390,410.34 × 155,587.72
4. Step 4: Simplify right side
   282,912.52x = 60,743,054,665.02
5. Step 5: Solve for x
   x = 60,743,054,665.02/282,912.52
6. Step 6: Final answer
   x = 214,706.14