Finding the Fourth Proportional to 142,377.82, 196,485.36 and 78,719.73

Step by Step Solution

1. Step 1: Write the proportion equation
   142,377.82 : 196,485.36 = 78,719.73 : x
2. Step 2: Convert to fraction form
   142,377.82/196,485.36 = 78,719.73/x
3. Step 3: Cross multiply
   142,377.82x = 196,485.36 × 78,719.73
4. Step 4: Simplify right side
   142,377.82x = 15,467,274,488.15
5. Step 5: Solve for x
   x = 15,467,274,488.15/142,377.82
6. Step 6: Final answer
   x = 108,635.42