Finding the Fourth Proportional to 62,478.70, 86,185.57 and 38,291.38

Step by Step Solution

1. Step 1: Write the proportion equation
   62,478.70 : 86,185.57 = 38,291.38 : x
2. Step 2: Convert to fraction form
   62,478.70/86,185.57 = 38,291.38/x
3. Step 3: Cross multiply
   62,478.70x = 86,185.57 × 38,291.38
4. Step 4: Simplify right side
   62,478.70x = 3,300,164,411.39
5. Step 5: Solve for x
   x = 3,300,164,411.39/62,478.70
6. Step 6: Final answer
   x = 52,820.63