Finding the Fourth Proportional to 42,891.12, 64,328.85 and 17,924.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,891.12 : 64,328.85 = 17,924.49 : x
2. Step 2: Convert to fraction form
   42,891.12/64,328.85 = 17,924.49/x
3. Step 3: Cross multiply
   42,891.12x = 64,328.85 × 17,924.49
4. Step 4: Simplify right side
   42,891.12x = 1,153,061,828.54
5. Step 5: Solve for x
   x = 1,153,061,828.54/42,891.12
6. Step 6: Final answer
   x = 26,883.46