Finding the Fourth Proportional to 65,400, 90,284 and 43,882.05

Step by Step Solution

1. Step 1: Write the proportion equation
   65,400 : 90,284 = 43,882.05 : x
2. Step 2: Convert to fraction form
   65,400/90,284 = 43,882.05/x
3. Step 3: Cross multiply
   65,400x = 90,284 × 43,882.05
4. Step 4: Simplify right side
   65,400x = 3,961,847,002.20
5. Step 5: Solve for x
   x = 3,961,847,002.20/65,400
6. Step 6: Final answer
   x = 60,578.70