Finding the Fourth Proportional to 31,102.21, 42,922.15 and 17,674.03

Step by Step Solution

1. Step 1: Write the proportion equation
   31,102.21 : 42,922.15 = 17,674.03 : x
2. Step 2: Convert to fraction form
   31,102.21/42,922.15 = 17,674.03/x
3. Step 3: Cross multiply
   31,102.21x = 42,922.15 × 17,674.03
4. Step 4: Simplify right side
   31,102.21x = 758,607,475.65
5. Step 5: Solve for x
   x = 758,607,475.65/31,102.21
6. Step 6: Final answer
   x = 24,390.79