Finding the Fourth Proportional to 65,636.71, 90,530.31 and 49,504.71

Step by Step Solution

1. Step 1: Write the proportion equation
   65,636.71 : 90,530.31 = 49,504.71 : x
2. Step 2: Convert to fraction form
   65,636.71/90,530.31 = 49,504.71/x
3. Step 3: Cross multiply
   65,636.71x = 90,530.31 × 49,504.71
4. Step 4: Simplify right side
   65,636.71x = 4,481,676,742.76
5. Step 5: Solve for x
   x = 4,481,676,742.76/65,636.71
6. Step 6: Final answer
   x = 68,280.03