Finding the Fourth Proportional to 65,300.40, 90,165.24 and 50,169.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,300.40 : 90,165.24 = 50,169.12 : x
2. Step 2: Convert to fraction form
   65,300.40/90,165.24 = 50,169.12/x
3. Step 3: Cross multiply
   65,300.40x = 90,165.24 × 50,169.12
4. Step 4: Simplify right side
   65,300.40x = 4,523,510,745.39
5. Step 5: Solve for x
   x = 4,523,510,745.39/65,300.40
6. Step 6: Final answer
   x = 69,272.33