Finding the Fourth Proportional to 65,109.27, 89,891.17 and 49,972.95

Step by Step Solution

1. Step 1: Write the proportion equation
   65,109.27 : 89,891.17 = 49,972.95 : x
2. Step 2: Convert to fraction form
   65,109.27/89,891.17 = 49,972.95/x
3. Step 3: Cross multiply
   65,109.27x = 89,891.17 × 49,972.95
4. Step 4: Simplify right side
   65,109.27x = 4,492,126,818.92
5. Step 5: Solve for x
   x = 4,492,126,818.92/65,109.27
6. Step 6: Final answer
   x = 68,993.66