Finding the Fourth Proportional to 142,016.76, 195,974.28 and 78,355.08

Step by Step Solution

1. Step 1: Write the proportion equation
   142,016.76 : 195,974.28 = 78,355.08 : x
2. Step 2: Convert to fraction form
   142,016.76/195,974.28 = 78,355.08/x
3. Step 3: Cross multiply
   142,016.76x = 195,974.28 × 78,355.08
4. Step 4: Simplify right side
   142,016.76x = 15,355,580,387.34
5. Step 5: Solve for x
   x = 15,355,580,387.34/142,016.76
6. Step 6: Final answer
   x = 108,125.13