Finding the Fourth Proportional to 142,424.38, 196,545.36 and 81,973

Step by Step Solution

1. Step 1: Write the proportion equation
   142,424.38 : 196,545.36 = 81,973 : x
2. Step 2: Convert to fraction form
   142,424.38/196,545.36 = 81,973/x
3. Step 3: Cross multiply
   142,424.38x = 196,545.36 × 81,973
4. Step 4: Simplify right side
   142,424.38x = 16,111,412,795.28
5. Step 5: Solve for x
   x = 16,111,412,795.28/142,424.38
6. Step 6: Final answer
   x = 113,122.58