Finding the Fourth Proportional to 139,016.42, 192,002.09 and 91,481.97

Step by Step Solution

1. Step 1: Write the proportion equation
   139,016.42 : 192,002.09 = 91,481.97 : x
2. Step 2: Convert to fraction form
   139,016.42/192,002.09 = 91,481.97/x
3. Step 3: Cross multiply
   139,016.42x = 192,002.09 × 91,481.97
4. Step 4: Simplify right side
   139,016.42x = 17,564,728,979.91
5. Step 5: Solve for x
   x = 17,564,728,979.91/139,016.42
6. Step 6: Final answer
   x = 126,350.04