Finding the Fourth Proportional to 81,789.82, 112,862.18 and 47,806.28

Step by Step Solution

1. Step 1: Write the proportion equation
   81,789.82 : 112,862.18 = 47,806.28 : x
2. Step 2: Convert to fraction form
   81,789.82/112,862.18 = 47,806.28/x
3. Step 3: Cross multiply
   81,789.82x = 112,862.18 × 47,806.28
4. Step 4: Simplify right side
   81,789.82x = 5,395,520,978.49
5. Step 5: Solve for x
   x = 5,395,520,978.49/81,789.82
6. Step 6: Final answer
   x = 65,968.12