Finding the Fourth Proportional to 65,069.12, 89,768.72 and 43,855.20

Step by Step Solution

1. Step 1: Write the proportion equation
   65,069.12 : 89,768.72 = 43,855.20 : x
2. Step 2: Convert to fraction form
   65,069.12/89,768.72 = 43,855.20/x
3. Step 3: Cross multiply
   65,069.12x = 89,768.72 × 43,855.20
4. Step 4: Simplify right side
   65,069.12x = 3,936,825,169.34
5. Step 5: Solve for x
   x = 3,936,825,169.34/65,069.12
6. Step 6: Final answer
   x = 60,502.20