Finding the Fourth Proportional to 142,096.66, 196,093.41 and 78,434.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142,096.66 : 196,093.41 = 78,434.47 : x
2. Step 2: Convert to fraction form
   142,096.66/196,093.41 = 78,434.47/x
3. Step 3: Cross multiply
   142,096.66x = 196,093.41 × 78,434.47
4. Step 4: Simplify right side
   142,096.66x = 15,380,482,683.84
5. Step 5: Solve for x
   x = 15,380,482,683.84/142,096.66
6. Step 6: Final answer
   x = 108,239.58