Finding the Fourth Proportional to 248,771.50, 373,215.57 and 82,559.50

Step by Step Solution

1. Step 1: Write the proportion equation
   248,771.50 : 373,215.57 = 82,559.50 : x
2. Step 2: Convert to fraction form
   248,771.50/373,215.57 = 82,559.50/x
3. Step 3: Cross multiply
   248,771.50x = 373,215.57 × 82,559.50
4. Step 4: Simplify right side
   248,771.50x = 30,812,490,851.42
5. Step 5: Solve for x
   x = 30,812,490,851.42/248,771.50
6. Step 6: Final answer
   x = 123,858.60