Finding the Fourth Proportional to 57,621, 86,434.74 and 16,071.24

Step by Step Solution

1. Step 1: Write the proportion equation
   57,621 : 86,434.74 = 16,071.24 : x
2. Step 2: Convert to fraction form
   57,621/86,434.74 = 16,071.24/x
3. Step 3: Cross multiply
   57,621x = 86,434.74 × 16,071.24
4. Step 4: Simplify right side
   57,621x = 1,389,113,450.88
5. Step 5: Solve for x
   x = 1,389,113,450.88/57,621
6. Step 6: Final answer
   x = 24,107.76