Finding the Fourth Proportional to 30,902.34, 42,646.79 and 17,291.91

Step by Step Solution

1. Step 1: Write the proportion equation
   30,902.34 : 42,646.79 = 17,291.91 : x
2. Step 2: Convert to fraction form
   30,902.34/42,646.79 = 17,291.91/x
3. Step 3: Cross multiply
   30,902.34x = 42,646.79 × 17,291.91
4. Step 4: Simplify right side
   30,902.34x = 737,444,454.47
5. Step 5: Solve for x
   x = 737,444,454.47/30,902.34
6. Step 6: Final answer
   x = 23,863.71