Finding the Fourth Proportional to 282,830.34, 390,302.37 and 155,504.82

Step by Step Solution

1. Step 1: Write the proportion equation
   282,830.34 : 390,302.37 = 155,504.82 : x
2. Step 2: Convert to fraction form
   282,830.34/390,302.37 = 155,504.82/x
3. Step 3: Cross multiply
   282,830.34x = 390,302.37 × 155,504.82
4. Step 4: Simplify right side
   282,830.34x = 60,693,899,792.42
5. Step 5: Solve for x
   x = 60,693,899,792.42/282,830.34
6. Step 6: Final answer
   x = 214,594.73