Finding the Fourth Proportional to 647,574.90, 970,901.55 and 248,061.30

Step by Step Solution

1. Step 1: Write the proportion equation
   647,574.90 : 970,901.55 = 248,061.30 : x
2. Step 2: Convert to fraction form
   647,574.90/970,901.55 = 248,061.30/x
3. Step 3: Cross multiply
   647,574.90x = 970,901.55 × 248,061.30
4. Step 4: Simplify right side
   647,574.90x = 240,843,100,665.02
5. Step 5: Solve for x
   x = 240,843,100,665.02/647,574.90
6. Step 6: Final answer
   x = 371,915.44