Finding the Fourth Proportional to 65,038.91, 89,763.21 and 38,196.09

Step by Step Solution

1. Step 1: Write the proportion equation
   65,038.91 : 89,763.21 = 38,196.09 : x
2. Step 2: Convert to fraction form
   65,038.91/89,763.21 = 38,196.09/x
3. Step 3: Cross multiply
   65,038.91x = 89,763.21 × 38,196.09
4. Step 4: Simplify right side
   65,038.91x = 3,428,603,647.85
5. Step 5: Solve for x
   x = 3,428,603,647.85/65,038.91
6. Step 6: Final answer
   x = 52,716.20