Finding the Fourth Proportional to 65,420.22, 90,282.69 and 37,128.54

Step by Step Solution

1. Step 1: Write the proportion equation
   65,420.22 : 90,282.69 = 37,128.54 : x
2. Step 2: Convert to fraction form
   65,420.22/90,282.69 = 37,128.54/x
3. Step 3: Cross multiply
   65,420.22x = 90,282.69 × 37,128.54
4. Step 4: Simplify right side
   65,420.22x = 3,352,064,466.97
5. Step 5: Solve for x
   x = 3,352,064,466.97/65,420.22
6. Step 6: Final answer
   x = 51,238.97