Finding the Fourth Proportional to 65,485.98, 90,381.57 and 38,635.14

Step by Step Solution

1. Step 1: Write the proportion equation
   65,485.98 : 90,381.57 = 38,635.14 : x
2. Step 2: Convert to fraction form
   65,485.98/90,381.57 = 38,635.14/x
3. Step 3: Cross multiply
   65,485.98x = 90,381.57 × 38,635.14
4. Step 4: Simplify right side
   65,485.98x = 3,491,904,610.37
5. Step 5: Solve for x
   x = 3,491,904,610.37/65,485.98
6. Step 6: Final answer
   x = 53,322.93