Finding the Fourth Proportional to 675,139.37, 1,012,397.37 and 248,568.05

Step by Step Solution

1. Step 1: Write the proportion equation
   675,139.37 : 1,012,397.37 = 248,568.05 : x
2. Step 2: Convert to fraction form
   675,139.37/1,012,397.37 = 248,568.05/x
3. Step 3: Cross multiply
   675,139.37x = 1,012,397.37 × 248,568.05
4. Step 4: Simplify right side
   675,139.37x = 251,649,635,024.04
5. Step 5: Solve for x
   x = 251,649,635,024.04/675,139.37
6. Step 6: Final answer
   x = 372,737.32