Finding the Fourth Proportional to 204,780.06, 307,308.50 and 71,661.50

Step by Step Solution

1. Step 1: Write the proportion equation
   204,780.06 : 307,308.50 = 71,661.50 : x
2. Step 2: Convert to fraction form
   204,780.06/307,308.50 = 71,661.50/x
3. Step 3: Cross multiply
   204,780.06x = 307,308.50 × 71,661.50
4. Step 4: Simplify right side
   204,780.06x = 22,022,186,177.90
5. Step 5: Solve for x
   x = 22,022,186,177.90/204,780.06
6. Step 6: Final answer
   x = 107,540.68