Finding the Fourth Proportional to 67,989.80, 101,949.68 and 30,517.75

Step by Step Solution

1. Step 1: Write the proportion equation
   67,989.80 : 101,949.68 = 30,517.75 : x
2. Step 2: Convert to fraction form
   67,989.80/101,949.68 = 30,517.75/x
3. Step 3: Cross multiply
   67,989.80x = 101,949.68 × 30,517.75
4. Step 4: Simplify right side
   67,989.80x = 3,111,274,846.82
5. Step 5: Solve for x
   x = 3,111,274,846.82/67,989.80
6. Step 6: Final answer
   x = 45,760.91