Finding the Fourth Proportional to 65,504.26, 90,464.50 and 45,139.27

Step by Step Solution

1. Step 1: Write the proportion equation
   65,504.26 : 90,464.50 = 45,139.27 : x
2. Step 2: Convert to fraction form
   65,504.26/90,464.50 = 45,139.27/x
3. Step 3: Cross multiply
   65,504.26x = 90,464.50 × 45,139.27
4. Step 4: Simplify right side
   65,504.26x = 4,083,501,459.52
5. Step 5: Solve for x
   x = 4,083,501,459.52/65,504.26
6. Step 6: Final answer
   x = 62,339.48