Finding the Fourth Proportional to 62,979.20, 86,910.72 and 34,684.28

Step by Step Solution

1. Step 1: Write the proportion equation
   62,979.20 : 86,910.72 = 34,684.28 : x
2. Step 2: Convert to fraction form
   62,979.20/86,910.72 = 34,684.28/x
3. Step 3: Cross multiply
   62,979.20x = 86,910.72 × 34,684.28
4. Step 4: Simplify right side
   62,979.20x = 3,014,435,747.48
5. Step 5: Solve for x
   x = 3,014,435,747.48/62,979.20
6. Step 6: Final answer
   x = 47,863.99