Finding the Fourth Proportional to 142,155.29, 196,184.63 and 81,744.89

Step by Step Solution

1. Step 1: Write the proportion equation
   142,155.29 : 196,184.63 = 81,744.89 : x
2. Step 2: Convert to fraction form
   142,155.29/196,184.63 = 81,744.89/x
3. Step 3: Cross multiply
   142,155.29x = 196,184.63 × 81,744.89
4. Step 4: Simplify right side
   142,155.29x = 16,037,089,609.39
5. Step 5: Solve for x
   x = 16,037,089,609.39/142,155.29
6. Step 6: Final answer
   x = 112,813.88