Finding the Fourth Proportional to 65,618, 90,553.80 and 35,810

Step by Step Solution

1. Step 1: Write the proportion equation
   65,618 : 90,553.80 = 35,810 : x
2. Step 2: Convert to fraction form
   65,618/90,553.80 = 35,810/x
3. Step 3: Cross multiply
   65,618x = 90,553.80 × 35,810
4. Step 4: Simplify right side
   65,618x = 3,242,731,578
5. Step 5: Solve for x
   x = 3,242,731,578/65,618
6. Step 6: Final answer
   x = 49,418.32