Finding the Fourth Proportional to 142,786.48, 197,046.50 and 79,125.34

Step by Step Solution

1. Step 1: Write the proportion equation
   142,786.48 : 197,046.50 = 79,125.34 : x
2. Step 2: Convert to fraction form
   142,786.48/197,046.50 = 79,125.34/x
3. Step 3: Cross multiply
   142,786.48x = 197,046.50 × 79,125.34
4. Step 4: Simplify right side
   142,786.48x = 15,591,371,308.31
5. Step 5: Solve for x
   x = 15,591,371,308.31/142,786.48
6. Step 6: Final answer
   x = 109,193.61