Finding the Fourth Proportional to 42,808.71, 64,231.41 and 16,531.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,808.71 : 64,231.41 = 16,531.89 : x
2. Step 2: Convert to fraction form
   42,808.71/64,231.41 = 16,531.89/x
3. Step 3: Cross multiply
   42,808.71x = 64,231.41 × 16,531.89
4. Step 4: Simplify right side
   42,808.71x = 1,061,866,604.66
5. Step 5: Solve for x
   x = 1,061,866,604.66/42,808.71
6. Step 6: Final answer
   x = 24,804.92