Finding the Fourth Proportional to 70,439.34, 105,658.14 and 17,131.62

Step by Step Solution

1. Step 1: Write the proportion equation
   70,439.34 : 105,658.14 = 17,131.62 : x
2. Step 2: Convert to fraction form
   70,439.34/105,658.14 = 17,131.62/x
3. Step 3: Cross multiply
   70,439.34x = 105,658.14 × 17,131.62
4. Step 4: Simplify right side
   70,439.34x = 1,810,095,104.39
5. Step 5: Solve for x
   x = 1,810,095,104.39/70,439.34
6. Step 6: Final answer
   x = 25,697.22