Finding the Fourth Proportional to 120,357.38, 166,095.78 and 65,911.84

Step by Step Solution

1. Step 1: Write the proportion equation
   120,357.38 : 166,095.78 = 65,911.84 : x
2. Step 2: Convert to fraction form
   120,357.38/166,095.78 = 65,911.84/x
3. Step 3: Cross multiply
   120,357.38x = 166,095.78 × 65,911.84
4. Step 4: Simplify right side
   120,357.38x = 10,947,678,476.04
5. Step 5: Solve for x
   x = 10,947,678,476.04/120,357.38
6. Step 6: Final answer
   x = 90,959.76