Finding the Fourth Proportional to 142,801.59, 197,066.21 and 79,143.49

Step by Step Solution

1. Step 1: Write the proportion equation
   142,801.59 : 197,066.21 = 79,143.49 : x
2. Step 2: Convert to fraction form
   142,801.59/197,066.21 = 79,143.49/x
3. Step 3: Cross multiply
   142,801.59x = 197,066.21 × 79,143.49
4. Step 4: Simplify right side
   142,801.59x = 15,596,507,471.09
5. Step 5: Solve for x
   x = 15,596,507,471.09/142,801.59
6. Step 6: Final answer
   x = 109,218.02