Finding the Fourth Proportional to 79,623.35, 109,818 and 49,391.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,623.35 : 109,818 = 49,391.72 : x
2. Step 2: Convert to fraction form
   79,623.35/109,818 = 49,391.72/x
3. Step 3: Cross multiply
   79,623.35x = 109,818 × 49,391.72
4. Step 4: Simplify right side
   79,623.35x = 5,424,099,906.96
5. Step 5: Solve for x
   x = 5,424,099,906.96/79,623.35
6. Step 6: Final answer
   x = 68,121.98