Finding the Fourth Proportional to 142,336.84, 196,440.82 and 85,747

Step by Step Solution

1. Step 1: Write the proportion equation
   142,336.84 : 196,440.82 = 85,747 : x
2. Step 2: Convert to fraction form
   142,336.84/196,440.82 = 85,747/x
3. Step 3: Cross multiply
   142,336.84x = 196,440.82 × 85,747
4. Step 4: Simplify right side
   142,336.84x = 16,844,210,992.54
5. Step 5: Solve for x
   x = 16,844,210,992.54/142,336.84
6. Step 6: Final answer
   x = 118,340.49