Finding the Fourth Proportional to 30,900.51, 42,642.21 and 17,471.34

Step by Step Solution

1. Step 1: Write the proportion equation
   30,900.51 : 42,642.21 = 17,471.34 : x
2. Step 2: Convert to fraction form
   30,900.51/42,642.21 = 17,471.34/x
3. Step 3: Cross multiply
   30,900.51x = 42,642.21 × 17,471.34
4. Step 4: Simplify right side
   30,900.51x = 745,016,549.26
5. Step 5: Solve for x
   x = 745,016,549.26/30,900.51
6. Step 6: Final answer
   x = 24,110.17