Finding the Fourth Proportional to 65,282.48, 90,057.78 and 42,611

Step by Step Solution

1. Step 1: Write the proportion equation
   65,282.48 : 90,057.78 = 42,611 : x
2. Step 2: Convert to fraction form
   65,282.48/90,057.78 = 42,611/x
3. Step 3: Cross multiply
   65,282.48x = 90,057.78 × 42,611
4. Step 4: Simplify right side
   65,282.48x = 3,837,452,063.58
5. Step 5: Solve for x
   x = 3,837,452,063.58/65,282.48
6. Step 6: Final answer
   x = 58,782.27