Finding the Fourth Proportional to 142,626.79, 196,824.99 and 78,100.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,626.79 : 196,824.99 = 78,100.10 : x
2. Step 2: Convert to fraction form
   142,626.79/196,824.99 = 78,100.10/x
3. Step 3: Cross multiply
   142,626.79x = 196,824.99 × 78,100.10
4. Step 4: Simplify right side
   142,626.79x = 15,372,050,493.55
5. Step 5: Solve for x
   x = 15,372,050,493.55/142,626.79
6. Step 6: Final answer
   x = 107,778.14