Finding the Fourth Proportional to 142,247.96, 196,307.83 and 81,818.54

Step by Step Solution

1. Step 1: Write the proportion equation
   142,247.96 : 196,307.83 = 81,818.54 : x
2. Step 2: Convert to fraction form
   142,247.96/196,307.83 = 81,818.54/x
3. Step 3: Cross multiply
   142,247.96x = 196,307.83 × 81,818.54
4. Step 4: Simplify right side
   142,247.96x = 16,061,620,041.17
5. Step 5: Solve for x
   x = 16,061,620,041.17/142,247.96
6. Step 6: Final answer
   x = 112,912.83