Finding the Fourth Proportional to 90,249.72, 124,579.50 and 80,801.88

Step by Step Solution

1. Step 1: Write the proportion equation
   90,249.72 : 124,579.50 = 80,801.88 : x
2. Step 2: Convert to fraction form
   90,249.72/124,579.50 = 80,801.88/x
3. Step 3: Cross multiply
   90,249.72x = 124,579.50 × 80,801.88
4. Step 4: Simplify right side
   90,249.72x = 10,066,257,809.46
5. Step 5: Solve for x
   x = 10,066,257,809.46/90,249.72
6. Step 6: Final answer
   x = 111,537.83