Finding the Fourth Proportional to 65,499.75, 90,389.67 and 35,691.75

Step by Step Solution

1. Step 1: Write the proportion equation
   65,499.75 : 90,389.67 = 35,691.75 : x
2. Step 2: Convert to fraction form
   65,499.75/90,389.67 = 35,691.75/x
3. Step 3: Cross multiply
   65,499.75x = 90,389.67 × 35,691.75
4. Step 4: Simplify right side
   65,499.75x = 3,226,165,504.22
5. Step 5: Solve for x
   x = 3,226,165,504.22/65,499.75
6. Step 6: Final answer
   x = 49,254.62