Finding the Fourth Proportional to 89,049.62, 122,945.83 and 79,472.99

Step by Step Solution

1. Step 1: Write the proportion equation
   89,049.62 : 122,945.83 = 79,472.99 : x
2. Step 2: Convert to fraction form
   89,049.62/122,945.83 = 79,472.99/x
3. Step 3: Cross multiply
   89,049.62x = 122,945.83 × 79,472.99
4. Step 4: Simplify right side
   89,049.62x = 9,770,871,904.72
5. Step 5: Solve for x
   x = 9,770,871,904.72/89,049.62
6. Step 6: Final answer
   x = 109,723.91