Finding the Fourth Proportional to 65,484.38, 90,379.31 and 38,633.49

Step by Step Solution

1. Step 1: Write the proportion equation
   65,484.38 : 90,379.31 = 38,633.49 : x
2. Step 2: Convert to fraction form
   65,484.38/90,379.31 = 38,633.49/x
3. Step 3: Cross multiply
   65,484.38x = 90,379.31 × 38,633.49
4. Step 4: Simplify right side
   65,484.38x = 3,491,667,813.78
5. Step 5: Solve for x
   x = 3,491,667,813.78/65,484.38
6. Step 6: Final answer
   x = 53,320.62