Finding the Fourth Proportional to 142,049.34, 196,039.17 and 81,641.07

Step by Step Solution

1. Step 1: Write the proportion equation
   142,049.34 : 196,039.17 = 81,641.07 : x
2. Step 2: Convert to fraction form
   142,049.34/196,039.17 = 81,641.07/x
3. Step 3: Cross multiply
   142,049.34x = 196,039.17 × 81,641.07
4. Step 4: Simplify right side
   142,049.34x = 16,004,847,600.71
5. Step 5: Solve for x
   x = 16,004,847,600.71/142,049.34
6. Step 6: Final answer
   x = 112,671.05