Finding the Fourth Proportional to 142,116.40, 196,134.03 and 81,722.41

Step by Step Solution

1. Step 1: Write the proportion equation
   142,116.40 : 196,134.03 = 81,722.41 : x
2. Step 2: Convert to fraction form
   142,116.40/196,134.03 = 81,722.41/x
3. Step 3: Cross multiply
   142,116.40x = 196,134.03 × 81,722.41
4. Step 4: Simplify right side
   142,116.40x = 16,028,545,614.61
5. Step 5: Solve for x
   x = 16,028,545,614.61/142,116.40
6. Step 6: Final answer
   x = 112,784.63