Finding the Fourth Proportional to 142,372.05, 196,465.01 and 78,706.05

Step by Step Solution

1. Step 1: Write the proportion equation
   142,372.05 : 196,465.01 = 78,706.05 : x
2. Step 2: Convert to fraction form
   142,372.05/196,465.01 = 78,706.05/x
3. Step 3: Cross multiply
   142,372.05x = 196,465.01 × 78,706.05
4. Step 4: Simplify right side
   142,372.05x = 15,462,984,506.78
5. Step 5: Solve for x
   x = 15,462,984,506.78/142,372.05
6. Step 6: Final answer
   x = 108,609.69