Finding the Fourth Proportional to 49,853.12, 68,794.72 and 30,989.92

Step by Step Solution

1. Step 1: Write the proportion equation
   49,853.12 : 68,794.72 = 30,989.92 : x
2. Step 2: Convert to fraction form
   49,853.12/68,794.72 = 30,989.92/x
3. Step 3: Cross multiply
   49,853.12x = 68,794.72 × 30,989.92
4. Step 4: Simplify right side
   49,853.12x = 2,131,942,869.22
5. Step 5: Solve for x
   x = 2,131,942,869.22/49,853.12
6. Step 6: Final answer
   x = 42,764.48