Finding the Fourth Proportional to 245,222.18, 338,436.84 and 137,789.88

Step by Step Solution

1. Step 1: Write the proportion equation
   245,222.18 : 338,436.84 = 137,789.88 : x
2. Step 2: Convert to fraction form
   245,222.18/338,436.84 = 137,789.88/x
3. Step 3: Cross multiply
   245,222.18x = 338,436.84 × 137,789.88
4. Step 4: Simplify right side
   245,222.18x = 46,633,171,571.18
5. Step 5: Solve for x
   x = 46,633,171,571.18/245,222.18
6. Step 6: Final answer
   x = 190,167.02