Finding the Fourth Proportional to 62,910.81, 86,819.76 and 39,045.15

Step by Step Solution

1. Step 1: Write the proportion equation
   62,910.81 : 86,819.76 = 39,045.15 : x
2. Step 2: Convert to fraction form
   62,910.81/86,819.76 = 39,045.15/x
3. Step 3: Cross multiply
   62,910.81x = 86,819.76 × 39,045.15
4. Step 4: Simplify right side
   62,910.81x = 3,389,890,552.16
5. Step 5: Solve for x
   x = 3,389,890,552.16/62,910.81
6. Step 6: Final answer
   x = 53,884.07