Finding the Fourth Proportional to 120,086.52, 165,727.98 and 66,370.38

Step by Step Solution

1. Step 1: Write the proportion equation
   120,086.52 : 165,727.98 = 66,370.38 : x
2. Step 2: Convert to fraction form
   120,086.52/165,727.98 = 66,370.38/x
3. Step 3: Cross multiply
   120,086.52x = 165,727.98 × 66,370.38
4. Step 4: Simplify right side
   120,086.52x = 10,999,428,677.38
5. Step 5: Solve for x
   x = 10,999,428,677.38/120,086.52
6. Step 6: Final answer
   x = 91,595.87