Finding the Fourth Proportional to 31,200.21, 43,059.29 and 17,775.81

Step by Step Solution

1. Step 1: Write the proportion equation
   31,200.21 : 43,059.29 = 17,775.81 : x
2. Step 2: Convert to fraction form
   31,200.21/43,059.29 = 17,775.81/x
3. Step 3: Cross multiply
   31,200.21x = 43,059.29 × 17,775.81
4. Step 4: Simplify right side
   31,200.21x = 765,413,668.90
5. Step 5: Solve for x
   x = 765,413,668.90/31,200.21
6. Step 6: Final answer
   x = 24,532.32