Finding the Fourth Proportional to 31,429.63, 43,373.55 and 17,090.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,429.63 : 43,373.55 = 17,090.20 : x
2. Step 2: Convert to fraction form
   31,429.63/43,373.55 = 17,090.20/x
3. Step 3: Cross multiply
   31,429.63x = 43,373.55 × 17,090.20
4. Step 4: Simplify right side
   31,429.63x = 741,262,644.21
5. Step 5: Solve for x
   x = 741,262,644.21/31,429.63
6. Step 6: Final answer
   x = 23,584.84