Finding the Fourth Proportional to 70,621.05, 105,931.76 and 17,313.27

Step by Step Solution

1. Step 1: Write the proportion equation
   70,621.05 : 105,931.76 = 17,313.27 : x
2. Step 2: Convert to fraction form
   70,621.05/105,931.76 = 17,313.27/x
3. Step 3: Cross multiply
   70,621.05x = 105,931.76 × 17,313.27
4. Step 4: Simplify right side
   70,621.05x = 1,834,025,162.46
5. Step 5: Solve for x
   x = 1,834,025,162.46/70,621.05
6. Step 6: Final answer
   x = 25,969.95