Finding the Fourth Proportional to 282,915.52, 390,414.48 and 155,590.72

Step by Step Solution

1. Step 1: Write the proportion equation
   282,915.52 : 390,414.48 = 155,590.72 : x
2. Step 2: Convert to fraction form
   282,915.52/390,414.48 = 155,590.72/x
3. Step 3: Cross multiply
   282,915.52x = 390,414.48 × 155,590.72
4. Step 4: Simplify right side
   282,915.52x = 60,744,870,041.63
5. Step 5: Solve for x
   x = 60,744,870,041.63/282,915.52
6. Step 6: Final answer
   x = 214,710.28