Finding the Fourth Proportional to 439,086.72, 605,931.80 and 248,096.02

Step by Step Solution

1. Step 1: Write the proportion equation
   439,086.72 : 605,931.80 = 248,096.02 : x
2. Step 2: Convert to fraction form
   439,086.72/605,931.80 = 248,096.02/x
3. Step 3: Cross multiply
   439,086.72x = 605,931.80 × 248,096.02
4. Step 4: Simplify right side
   439,086.72x = 150,329,267,971.44
5. Step 5: Solve for x
   x = 150,329,267,971.44/439,086.72
6. Step 6: Final answer
   x = 342,368.06