Finding the Fourth Proportional to 245,156.79, 338,314.35 and 137,724.54

Step by Step Solution

1. Step 1: Write the proportion equation
   245,156.79 : 338,314.35 = 137,724.54 : x
2. Step 2: Convert to fraction form
   245,156.79/338,314.35 = 137,724.54/x
3. Step 3: Cross multiply
   245,156.79x = 338,314.35 × 137,724.54
4. Step 4: Simplify right side
   245,156.79x = 46,594,188,229.15
5. Step 5: Solve for x
   x = 46,594,188,229.15/245,156.79
6. Step 6: Final answer
   x = 190,058.73