Finding the Fourth Proportional to 142,020, 195,993.86 and 81,609.59

Step by Step Solution

1. Step 1: Write the proportion equation
   142,020 : 195,993.86 = 81,609.59 : x
2. Step 2: Convert to fraction form
   142,020/195,993.86 = 81,609.59/x
3. Step 3: Cross multiply
   142,020x = 195,993.86 × 81,609.59
4. Step 4: Simplify right side
   142,020x = 15,994,978,639.05
5. Step 5: Solve for x
   x = 15,994,978,639.05/142,020
6. Step 6: Final answer
   x = 112,624.83