Finding the Fourth Proportional to 81,817.76, 112,852.98 and 53,086.08

Step by Step Solution

1. Step 1: Write the proportion equation
   81,817.76 : 112,852.98 = 53,086.08 : x
2. Step 2: Convert to fraction form
   81,817.76/112,852.98 = 53,086.08/x
3. Step 3: Cross multiply
   81,817.76x = 112,852.98 × 53,086.08
4. Step 4: Simplify right side
   81,817.76x = 5,990,922,324.52
5. Step 5: Solve for x
   x = 5,990,922,324.52/81,817.76
6. Step 6: Final answer
   x = 73,222.76