Finding the Fourth Proportional to 62,433.89, 86,158.94 and 39,768.03

Step by Step Solution

1. Step 1: Write the proportion equation
   62,433.89 : 86,158.94 = 39,768.03 : x
2. Step 2: Convert to fraction form
   62,433.89/86,158.94 = 39,768.03/x
3. Step 3: Cross multiply
   62,433.89x = 86,158.94 × 39,768.03
4. Step 4: Simplify right side
   62,433.89x = 3,426,371,111.85
5. Step 5: Solve for x
   x = 3,426,371,111.85/62,433.89
6. Step 6: Final answer
   x = 54,879.99