Finding the Fourth Proportional to 31,870.14, 47,829.78 and 17,091.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,870.14 : 47,829.78 = 17,091.42 : x
2. Step 2: Convert to fraction form
   31,870.14/47,829.78 = 17,091.42/x
3. Step 3: Cross multiply
   31,870.14x = 47,829.78 × 17,091.42
4. Step 4: Simplify right side
   31,870.14x = 817,478,858.49
5. Step 5: Solve for x
   x = 817,478,858.49/31,870.14
6. Step 6: Final answer
   x = 25,650.31