Finding the Fourth Proportional to 65,805.57, 90,812.42 and 35,591.49

Step by Step Solution

1. Step 1: Write the proportion equation
   65,805.57 : 90,812.42 = 35,591.49 : x
2. Step 2: Convert to fraction form
   65,805.57/90,812.42 = 35,591.49/x
3. Step 3: Cross multiply
   65,805.57x = 90,812.42 × 35,591.49
4. Step 4: Simplify right side
   65,805.57x = 3,232,149,338.31
5. Step 5: Solve for x
   x = 3,232,149,338.31/65,805.57
6. Step 6: Final answer
   x = 49,116.65