Finding the Fourth Proportional to 142,367.80, 196,487.22 and 81,937.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,367.80 : 196,487.22 = 81,937.30 : x
2. Step 2: Convert to fraction form
   142,367.80/196,487.22 = 81,937.30/x
3. Step 3: Cross multiply
   142,367.80x = 196,487.22 × 81,937.30
4. Step 4: Simplify right side
   142,367.80x = 16,099,632,291.31
5. Step 5: Solve for x
   x = 16,099,632,291.31/142,367.80
6. Step 6: Final answer
   x = 113,084.79