Finding the Fourth Proportional to 142,724.42, 196,971.69 and 79,068.14

Step by Step Solution

1. Step 1: Write the proportion equation
   142,724.42 : 196,971.69 = 79,068.14 : x
2. Step 2: Convert to fraction form
   142,724.42/196,971.69 = 79,068.14/x
3. Step 3: Cross multiply
   142,724.42x = 196,971.69 × 79,068.14
4. Step 4: Simplify right side
   142,724.42x = 15,574,184,176.10
5. Step 5: Solve for x
   x = 15,574,184,176.10/142,724.42
6. Step 6: Final answer
   x = 109,120.67