Finding the Fourth Proportional to 143,320.89, 197,789.54 and 79,659.75

Step by Step Solution

1. Step 1: Write the proportion equation
   143,320.89 : 197,789.54 = 79,659.75 : x
2. Step 2: Convert to fraction form
   143,320.89/197,789.54 = 79,659.75/x
3. Step 3: Cross multiply
   143,320.89x = 197,789.54 × 79,659.75
4. Step 4: Simplify right side
   143,320.89x = 15,755,864,910.72
5. Step 5: Solve for x
   x = 15,755,864,910.72/143,320.89
6. Step 6: Final answer
   x = 109,934.18