Finding the Fourth Proportional to 81,668.74, 112,700.01 and 49,890.82

Step by Step Solution

1. Step 1: Write the proportion equation
   81,668.74 : 112,700.01 = 49,890.82 : x
2. Step 2: Convert to fraction form
   81,668.74/112,700.01 = 49,890.82/x
3. Step 3: Cross multiply
   81,668.74x = 112,700.01 × 49,890.82
4. Step 4: Simplify right side
   81,668.74x = 5,622,695,912.91
5. Step 5: Solve for x
   x = 5,622,695,912.91/81,668.74
6. Step 6: Final answer
   x = 68,847.59