Finding the Fourth Proportional to 143,280.05, 197,717.42 and 79,614.05

Step by Step Solution

1. Step 1: Write the proportion equation
   143,280.05 : 197,717.42 = 79,614.05 : x
2. Step 2: Convert to fraction form
   143,280.05/197,717.42 = 79,614.05/x
3. Step 3: Cross multiply
   143,280.05x = 197,717.42 × 79,614.05
4. Step 4: Simplify right side
   143,280.05x = 15,741,084,561.75
5. Step 5: Solve for x
   x = 15,741,084,561.75/143,280.05
6. Step 6: Final answer
   x = 109,862.36