Finding the Fourth Proportional to 106,727.73, 159,744.06 and 78,636.57

Step by Step Solution

1. Step 1: Write the proportion equation
   106,727.73 : 159,744.06 = 78,636.57 : x
2. Step 2: Convert to fraction form
   106,727.73/159,744.06 = 78,636.57/x
3. Step 3: Cross multiply
   106,727.73x = 159,744.06 × 78,636.57
4. Step 4: Simplify right side
   106,727.73x = 12,561,724,956.27
5. Step 5: Solve for x
   x = 12,561,724,956.27/106,727.73
6. Step 6: Final answer
   x = 117,698.79