Finding the Fourth Proportional to 65,263, 90,055.30 and 38,399.60

Step by Step Solution

1. Step 1: Write the proportion equation
   65,263 : 90,055.30 = 38,399.60 : x
2. Step 2: Convert to fraction form
   65,263/90,055.30 = 38,399.60/x
3. Step 3: Cross multiply
   65,263x = 90,055.30 × 38,399.60
4. Step 4: Simplify right side
   65,263x = 3,458,087,497.88
5. Step 5: Solve for x
   x = 3,458,087,497.88/65,263
6. Step 6: Final answer
   x = 52,986.95