Finding the Fourth Proportional to 81,786.81, 112,867.62 and 49,973.25

Step by Step Solution

1. Step 1: Write the proportion equation
   81,786.81 : 112,867.62 = 49,973.25 : x
2. Step 2: Convert to fraction form
   81,786.81/112,867.62 = 49,973.25/x
3. Step 3: Cross multiply
   81,786.81x = 112,867.62 × 49,973.25
4. Step 4: Simplify right side
   81,786.81x = 5,640,361,791.17
5. Step 5: Solve for x
   x = 5,640,361,791.17/81,786.81
6. Step 6: Final answer
   x = 68,964.20