Finding the Fourth Proportional to 120,076.38, 165,705.93 and 65,629.65

Step by Step Solution

1. Step 1: Write the proportion equation
   120,076.38 : 165,705.93 = 65,629.65 : x
2. Step 2: Convert to fraction form
   120,076.38/165,705.93 = 65,629.65/x
3. Step 3: Cross multiply
   120,076.38x = 165,705.93 × 65,629.65
4. Step 4: Simplify right side
   120,076.38x = 10,875,222,188.82
5. Step 5: Solve for x
   x = 10,875,222,188.82/120,076.38
6. Step 6: Final answer
   x = 90,569.20