Finding the Fourth Proportional to 62,786.40, 86,648.16 and 34,494.72

Step by Step Solution

1. Step 1: Write the proportion equation
   62,786.40 : 86,648.16 = 34,494.72 : x
2. Step 2: Convert to fraction form
   62,786.40/86,648.16 = 34,494.72/x
3. Step 3: Cross multiply
   62,786.40x = 86,648.16 × 34,494.72
4. Step 4: Simplify right side
   62,786.40x = 2,988,904,017.72
5. Step 5: Solve for x
   x = 2,988,904,017.72/62,786.40
6. Step 6: Final answer
   x = 47,604.32