Finding the Fourth Proportional to 143,002.05, 197,342.85 and 79,339.69

Step by Step Solution

1. Step 1: Write the proportion equation
   143,002.05 : 197,342.85 = 79,339.69 : x
2. Step 2: Convert to fraction form
   143,002.05/197,342.85 = 79,339.69/x
3. Step 3: Cross multiply
   143,002.05x = 197,342.85 × 79,339.69
4. Step 4: Simplify right side
   143,002.05x = 15,657,121,086.92
5. Step 5: Solve for x
   x = 15,657,121,086.92/143,002.05
6. Step 6: Final answer
   x = 109,488.79