Finding the Fourth Proportional to 142,005.72, 195,963.42 and 80,758.56

Step by Step Solution

1. Step 1: Write the proportion equation
   142,005.72 : 195,963.42 = 80,758.56 : x
2. Step 2: Convert to fraction form
   142,005.72/195,963.42 = 80,758.56/x
3. Step 3: Cross multiply
   142,005.72x = 195,963.42 × 80,758.56
4. Step 4: Simplify right side
   142,005.72x = 15,825,723,611.88
5. Step 5: Solve for x
   x = 15,825,723,611.88/142,005.72
6. Step 6: Final answer
   x = 111,444.27