Finding the Fourth Proportional to 65,288, 90,097.68 and 35,480

Step by Step Solution

1. Step 1: Write the proportion equation
   65,288 : 90,097.68 = 35,480 : x
2. Step 2: Convert to fraction form
   65,288/90,097.68 = 35,480/x
3. Step 3: Cross multiply
   65,288x = 90,097.68 × 35,480
4. Step 4: Simplify right side
   65,288x = 3,196,665,686.40
5. Step 5: Solve for x
   x = 3,196,665,686.40/65,288
6. Step 6: Final answer
   x = 48,962.53