Finding the Fourth Proportional to 41,978.10, 62,927.55 and 20,898.18

Step by Step Solution

1. Step 1: Write the proportion equation
   41,978.10 : 62,927.55 = 20,898.18 : x
2. Step 2: Convert to fraction form
   41,978.10/62,927.55 = 20,898.18/x
3. Step 3: Cross multiply
   41,978.10x = 62,927.55 × 20,898.18
4. Step 4: Simplify right side
   41,978.10x = 1,315,071,266.86
5. Step 5: Solve for x
   x = 1,315,071,266.86/41,978.10
6. Step 6: Final answer
   x = 31,327.56