Finding the Fourth Proportional to 142,235.35, 196,290.73 and 81,806.03

Step by Step Solution

1. Step 1: Write the proportion equation
   142,235.35 : 196,290.73 = 81,806.03 : x
2. Step 2: Convert to fraction form
   142,235.35/196,290.73 = 81,806.03/x
3. Step 3: Cross multiply
   142,235.35x = 196,290.73 × 81,806.03
4. Step 4: Simplify right side
   142,235.35x = 16,057,765,633.31
5. Step 5: Solve for x
   x = 16,057,765,633.31/142,235.35
6. Step 6: Final answer
   x = 112,895.75