Finding the Fourth Proportional to 142,179.84, 196,208.06 and 78,517.49

Step by Step Solution

1. Step 1: Write the proportion equation
   142,179.84 : 196,208.06 = 78,517.49 : x
2. Step 2: Convert to fraction form
   142,179.84/196,208.06 = 78,517.49/x
3. Step 3: Cross multiply
   142,179.84x = 196,208.06 × 78,517.49
4. Step 4: Simplify right side
   142,179.84x = 15,405,763,015.34
5. Step 5: Solve for x
   x = 15,405,763,015.34/142,179.84
6. Step 6: Final answer
   x = 108,354.06