Finding the Fourth Proportional to 143,061.93, 197,421.71 and 79,398.09

Step by Step Solution

1. Step 1: Write the proportion equation
   143,061.93 : 197,421.71 = 79,398.09 : x
2. Step 2: Convert to fraction form
   143,061.93/197,421.71 = 79,398.09/x
3. Step 3: Cross multiply
   143,061.93x = 197,421.71 × 79,398.09
4. Step 4: Simplify right side
   143,061.93x = 15,674,906,301.54
5. Step 5: Solve for x
   x = 15,674,906,301.54/143,061.93
6. Step 6: Final answer
   x = 109,567.28