Finding the Fourth Proportional to 79,716.48, 109,980 and 52,872

Step by Step Solution

1. Step 1: Write the proportion equation
   79,716.48 : 109,980 = 52,872 : x
2. Step 2: Convert to fraction form
   79,716.48/109,980 = 52,872/x
3. Step 3: Cross multiply
   79,716.48x = 109,980 × 52,872
4. Step 4: Simplify right side
   79,716.48x = 5,814,862,560
5. Step 5: Solve for x
   x = 5,814,862,560/79,716.48
6. Step 6: Final answer
   x = 72,944.30