Finding the Fourth Proportional to 115,942.80, 159,926.72 and 79,626.72

Step by Step Solution

1. Step 1: Write the proportion equation
   115,942.80 : 159,926.72 = 79,626.72 : x
2. Step 2: Convert to fraction form
   115,942.80/159,926.72 = 79,626.72/x
3. Step 3: Cross multiply
   115,942.80x = 159,926.72 × 79,626.72
4. Step 4: Simplify right side
   115,942.80x = 12,734,440,153.96
5. Step 5: Solve for x
   x = 12,734,440,153.96/115,942.80
6. Step 6: Final answer
   x = 109,833.82