Finding the Fourth Proportional to 142,185.69, 196,215.35 and 78,523.34

Step by Step Solution

1. Step 1: Write the proportion equation
   142,185.69 : 196,215.35 = 78,523.34 : x
2. Step 2: Convert to fraction form
   142,185.69/196,215.35 = 78,523.34/x
3. Step 3: Cross multiply
   142,185.69x = 196,215.35 × 78,523.34
4. Step 4: Simplify right side
   142,185.69x = 15,407,483,267.58
5. Step 5: Solve for x
   x = 15,407,483,267.58/142,185.69
6. Step 6: Final answer
   x = 108,361.70