Finding the Fourth Proportional to 142,096.82, 196,093.58 and 78,434.60

Step by Step Solution

1. Step 1: Write the proportion equation
   142,096.82 : 196,093.58 = 78,434.60 : x
2. Step 2: Convert to fraction form
   142,096.82/196,093.58 = 78,434.60/x
3. Step 3: Cross multiply
   142,096.82x = 196,093.58 × 78,434.60
4. Step 4: Simplify right side
   142,096.82x = 15,380,520,137.23
5. Step 5: Solve for x
   x = 15,380,520,137.23/142,096.82
6. Step 6: Final answer
   x = 108,239.72