Finding the Fourth Proportional to 31,090.81, 42,903.96 and 17,662.01

Step by Step Solution

1. Step 1: Write the proportion equation
   31,090.81 : 42,903.96 = 17,662.01 : x
2. Step 2: Convert to fraction form
   31,090.81/42,903.96 = 17,662.01/x
3. Step 3: Cross multiply
   31,090.81x = 42,903.96 × 17,662.01
4. Step 4: Simplify right side
   31,090.81x = 757,770,082.25
5. Step 5: Solve for x
   x = 757,770,082.25/31,090.81
6. Step 6: Final answer
   x = 24,372.80