Finding the Fourth Proportional to 110,139.96, 165,041.72 and 81,923.56

Step by Step Solution

1. Step 1: Write the proportion equation
   110,139.96 : 165,041.72 = 81,923.56 : x
2. Step 2: Convert to fraction form
   110,139.96/165,041.72 = 81,923.56/x
3. Step 3: Cross multiply
   110,139.96x = 165,041.72 × 81,923.56
4. Step 4: Simplify right side
   110,139.96x = 13,520,805,250.92
5. Step 5: Solve for x
   x = 13,520,805,250.92/110,139.96
6. Step 6: Final answer
   x = 122,760.22