Finding the Fourth Proportional to 109,448.78, 151,028.24 and 80,784.09

Step by Step Solution

1. Step 1: Write the proportion equation
   109,448.78 : 151,028.24 = 80,784.09 : x
2. Step 2: Convert to fraction form
   109,448.78/151,028.24 = 80,784.09/x
3. Step 3: Cross multiply
   109,448.78x = 151,028.24 × 80,784.09
4. Step 4: Simplify right side
   109,448.78x = 12,200,678,528.78
5. Step 5: Solve for x
   x = 12,200,678,528.78/109,448.78
6. Step 6: Final answer
   x = 111,473.87