Finding the Fourth Proportional to 35,965.50, 49,636.71 and 21,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   35,965.50 : 49,636.71 = 21,061.50 : x
2. Step 2: Convert to fraction form
   35,965.50/49,636.71 = 21,061.50/x
3. Step 3: Cross multiply
   35,965.50x = 49,636.71 × 21,061.50
4. Step 4: Simplify right side
   35,965.50x = 1,045,423,567.67
5. Step 5: Solve for x
   x = 1,045,423,567.67/35,965.50
6. Step 6: Final answer
   x = 29,067.40