Finding the Fourth Proportional to 31,645, 43,669.78 and 17,497.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,645 : 43,669.78 = 17,497.16 : x
2. Step 2: Convert to fraction form
   31,645/43,669.78 = 17,497.16/x
3. Step 3: Cross multiply
   31,645x = 43,669.78 × 17,497.16
4. Step 4: Simplify right side
   31,645x = 764,097,127.82
5. Step 5: Solve for x
   x = 764,097,127.82/31,645
6. Step 6: Final answer
   x = 24,145.90