Finding the Fourth Proportional to 42,967.30, 64,454.02 and 17,982.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,967.30 : 64,454.02 = 17,982.20 : x
2. Step 2: Convert to fraction form
   42,967.30/64,454.02 = 17,982.20/x
3. Step 3: Cross multiply
   42,967.30x = 64,454.02 × 17,982.20
4. Step 4: Simplify right side
   42,967.30x = 1,159,025,078.44
5. Step 5: Solve for x
   x = 1,159,025,078.44/42,967.30
6. Step 6: Final answer
   x = 26,974.58