Finding the Fourth Proportional to 65,789.50, 90,791.67 and 35,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,789.50 : 90,791.67 = 35,981.50 : x
2. Step 2: Convert to fraction form
   65,789.50/90,791.67 = 35,981.50/x
3. Step 3: Cross multiply
   65,789.50x = 90,791.67 × 35,981.50
4. Step 4: Simplify right side
   65,789.50x = 3,266,820,474.11
5. Step 5: Solve for x
   x = 3,266,820,474.11/65,789.50
6. Step 6: Final answer
   x = 49,655.65