Finding the Fourth Proportional to 35,986.30, 49,661.31 and 20,071.78

Step by Step Solution

1. Step 1: Write the proportion equation
   35,986.30 : 49,661.31 = 20,071.78 : x
2. Step 2: Convert to fraction form
   35,986.30/49,661.31 = 20,071.78/x
3. Step 3: Cross multiply
   35,986.30x = 49,661.31 × 20,071.78
4. Step 4: Simplify right side
   35,986.30x = 996,790,888.83
5. Step 5: Solve for x
   x = 996,790,888.83/35,986.30
6. Step 6: Final answer
   x = 27,699.18