Finding the Fourth Proportional to 88,272.72, 132,401.79 and 40,878

Step by Step Solution

1. Step 1: Write the proportion equation
   88,272.72 : 132,401.79 = 40,878 : x
2. Step 2: Convert to fraction form
   88,272.72/132,401.79 = 40,878/x
3. Step 3: Cross multiply
   88,272.72x = 132,401.79 × 40,878
4. Step 4: Simplify right side
   88,272.72x = 5,412,320,371.62
5. Step 5: Solve for x
   x = 5,412,320,371.62/88,272.72
6. Step 6: Final answer
   x = 61,313.62