Finding the Fourth Proportional to 143,059.48, 197,419.62 and 79,399.96

Step by Step Solution

1. Step 1: Write the proportion equation
   143,059.48 : 197,419.62 = 79,399.96 : x
2. Step 2: Convert to fraction form
   143,059.48/197,419.62 = 79,399.96/x
3. Step 3: Cross multiply
   143,059.48x = 197,419.62 × 79,399.96
4. Step 4: Simplify right side
   143,059.48x = 15,675,109,931.22
5. Step 5: Solve for x
   x = 15,675,109,931.22/143,059.48
6. Step 6: Final answer
   x = 109,570.58