Finding the Fourth Proportional to 79,071.28, 109,085.52 and 51,839.92

Step by Step Solution

1. Step 1: Write the proportion equation
   79,071.28 : 109,085.52 = 51,839.92 : x
2. Step 2: Convert to fraction form
   79,071.28/109,085.52 = 51,839.92/x
3. Step 3: Cross multiply
   79,071.28x = 109,085.52 × 51,839.92
4. Step 4: Simplify right side
   79,071.28x = 5,654,984,629.96
5. Step 5: Solve for x
   x = 5,654,984,629.96/79,071.28
6. Step 6: Final answer
   x = 71,517.56