Finding the Fourth Proportional to 143,196.75, 197,611.53 and 79,540.47

Step by Step Solution

1. Step 1: Write the proportion equation
   143,196.75 : 197,611.53 = 79,540.47 : x
2. Step 2: Convert to fraction form
   143,196.75/197,611.53 = 79,540.47/x
3. Step 3: Cross multiply
   143,196.75x = 197,611.53 × 79,540.47
4. Step 4: Simplify right side
   143,196.75x = 15,718,113,973.62
5. Step 5: Solve for x
   x = 15,718,113,973.62/143,196.75
6. Step 6: Final answer
   x = 109,765.86