Finding the Fourth Proportional to 245,308.56, 368,105.61 and 103,143.54

Step by Step Solution

1. Step 1: Write the proportion equation
   245,308.56 : 368,105.61 = 103,143.54 : x
2. Step 2: Convert to fraction form
   245,308.56/368,105.61 = 103,143.54/x
3. Step 3: Cross multiply
   245,308.56x = 368,105.61 × 103,143.54
4. Step 4: Simplify right side
   245,308.56x = 37,967,715,709.26
5. Step 5: Solve for x
   x = 37,967,715,709.26/245,308.56
6. Step 6: Final answer
   x = 154,775.34