Finding the Fourth Proportional to 142,795, 197,064.96 and 79,131.40

Step by Step Solution

1. Step 1: Write the proportion equation
   142,795 : 197,064.96 = 79,131.40 : x
2. Step 2: Convert to fraction form
   142,795/197,064.96 = 79,131.40/x
3. Step 3: Cross multiply
   142,795x = 197,064.96 × 79,131.40
4. Step 4: Simplify right side
   142,795x = 15,594,026,175.74
5. Step 5: Solve for x
   x = 15,594,026,175.74/142,795
6. Step 6: Final answer
   x = 109,205.69