Finding the Fourth Proportional to 142,862.21, 197,154.65 and 79,196.21

Step by Step Solution

1. Step 1: Write the proportion equation
   142,862.21 : 197,154.65 = 79,196.21 : x
2. Step 2: Convert to fraction form
   142,862.21/197,154.65 = 79,196.21/x
3. Step 3: Cross multiply
   142,862.21x = 197,154.65 × 79,196.21
4. Step 4: Simplify right side
   142,862.21x = 15,613,900,667.90
5. Step 5: Solve for x
   x = 15,613,900,667.90/142,862.21
6. Step 6: Final answer
   x = 109,293.43