Finding the Fourth Proportional to 81,111.68, 111,872.46 and 69,800.24

Step by Step Solution

1. Step 1: Write the proportion equation
   81,111.68 : 111,872.46 = 69,800.24 : x
2. Step 2: Convert to fraction form
   81,111.68/111,872.46 = 69,800.24/x
3. Step 3: Cross multiply
   81,111.68x = 111,872.46 × 69,800.24
4. Step 4: Simplify right side
   81,111.68x = 7,808,724,557.39
5. Step 5: Solve for x
   x = 7,808,724,557.39/81,111.68
6. Step 6: Final answer
   x = 96,271.27