Finding the Fourth Proportional to 282,760.89, 390,233.75 and 155,460.48

Step by Step Solution

1. Step 1: Write the proportion equation
   282,760.89 : 390,233.75 = 155,460.48 : x
2. Step 2: Convert to fraction form
   282,760.89/390,233.75 = 155,460.48/x
3. Step 3: Cross multiply
   282,760.89x = 390,233.75 × 155,460.48
4. Step 4: Simplify right side
   282,760.89x = 60,665,925,309.90
5. Step 5: Solve for x
   x = 60,665,925,309.90/282,760.89
6. Step 6: Final answer
   x = 214,548.50