Finding the Fourth Proportional to 245,940.30, 339,410.28 and 150,417

Step by Step Solution

1. Step 1: Write the proportion equation
   245,940.30 : 339,410.28 = 150,417 : x
2. Step 2: Convert to fraction form
   245,940.30/339,410.28 = 150,417/x
3. Step 3: Cross multiply
   245,940.30x = 339,410.28 × 150,417
4. Step 4: Simplify right side
   245,940.30x = 51,053,076,086.76
5. Step 5: Solve for x
   x = 51,053,076,086.76/245,940.30
6. Step 6: Final answer
   x = 207,583.21