Finding the Fourth Proportional to 67,783.89, 101,675.33 and 20,398.78

Step by Step Solution

1. Step 1: Write the proportion equation
   67,783.89 : 101,675.33 = 20,398.78 : x
2. Step 2: Convert to fraction form
   67,783.89/101,675.33 = 20,398.78/x
3. Step 3: Cross multiply
   67,783.89x = 101,675.33 × 20,398.78
4. Step 4: Simplify right side
   67,783.89x = 2,074,052,789.69
5. Step 5: Solve for x
   x = 2,074,052,789.69/67,783.89
6. Step 6: Final answer
   x = 30,598.02