Finding the Fourth Proportional to 30,500.18, 42,090.23 and 17,071.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,500.18 : 42,090.23 = 17,071.42 : x
2. Step 2: Convert to fraction form
   30,500.18/42,090.23 = 17,071.42/x
3. Step 3: Cross multiply
   30,500.18x = 42,090.23 × 17,071.42
4. Step 4: Simplify right side
   30,500.18x = 718,540,128.98
5. Step 5: Solve for x
   x = 718,540,128.98/30,500.18
6. Step 6: Final answer
   x = 23,558.56