Finding the Fourth Proportional to 62,705.42, 86,605.34 and 41,290.90

Step by Step Solution

1. Step 1: Write the proportion equation
   62,705.42 : 86,605.34 = 41,290.90 : x
2. Step 2: Convert to fraction form
   62,705.42/86,605.34 = 41,290.90/x
3. Step 3: Cross multiply
   62,705.42x = 86,605.34 × 41,290.90
4. Step 4: Simplify right side
   62,705.42x = 3,576,012,358.83
5. Step 5: Solve for x
   x = 3,576,012,358.83/62,705.42
6. Step 6: Final answer
   x = 57,028.76