Finding the Fourth Proportional to 143,104.89, 197,477.03 and 79,438.59

Step by Step Solution

1. Step 1: Write the proportion equation
   143,104.89 : 197,477.03 = 79,438.59 : x
2. Step 2: Convert to fraction form
   143,104.89/197,477.03 = 79,438.59/x
3. Step 3: Cross multiply
   143,104.89x = 197,477.03 × 79,438.59
4. Step 4: Simplify right side
   143,104.89x = 15,687,296,820.59
5. Step 5: Solve for x
   x = 15,687,296,820.59/143,104.89
6. Step 6: Final answer
   x = 109,620.97