Finding the Fourth Proportional to 119,667.49, 165,138.30 and 65,221.39

Step by Step Solution

1. Step 1: Write the proportion equation
   119,667.49 : 165,138.30 = 65,221.39 : x
2. Step 2: Convert to fraction form
   119,667.49/165,138.30 = 65,221.39/x
3. Step 3: Cross multiply
   119,667.49x = 165,138.30 × 65,221.39
4. Step 4: Simplify right side
   119,667.49x = 10,770,548,562.32
5. Step 5: Solve for x
   x = 10,770,548,562.32/119,667.49
6. Step 6: Final answer
   x = 90,003.96