Finding the Fourth Proportional to 142,367.56, 196,486.74 and 81,936.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,367.56 : 196,486.74 = 81,936.96 : x
2. Step 2: Convert to fraction form
   142,367.56/196,486.74 = 81,936.96/x
3. Step 3: Cross multiply
   142,367.56x = 196,486.74 × 81,936.96
4. Step 4: Simplify right side
   142,367.56x = 16,099,526,155.91
5. Step 5: Solve for x
   x = 16,099,526,155.91/142,367.56
6. Step 6: Final answer
   x = 113,084.23