Finding the Fourth Proportional to 245,708.34, 339,118.83 and 142,327.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,708.34 : 339,118.83 = 142,327.50 : x
2. Step 2: Convert to fraction form
   245,708.34/339,118.83 = 142,327.50/x
3. Step 3: Cross multiply
   245,708.34x = 339,118.83 × 142,327.50
4. Step 4: Simplify right side
   245,708.34x = 48,265,935,276.83
5. Step 5: Solve for x
   x = 48,265,935,276.83/245,708.34
6. Step 6: Final answer
   x = 196,435.89