Finding the Fourth Proportional to 119,099.72, 164,358.06 and 65,390.24

Step by Step Solution

1. Step 1: Write the proportion equation
   119,099.72 : 164,358.06 = 65,390.24 : x
2. Step 2: Convert to fraction form
   119,099.72/164,358.06 = 65,390.24/x
3. Step 3: Cross multiply
   119,099.72x = 164,358.06 × 65,390.24
4. Step 4: Simplify right side
   119,099.72x = 10,747,412,989.33
5. Step 5: Solve for x
   x = 10,747,412,989.33/119,099.72
6. Step 6: Final answer
   x = 90,238.78