Finding the Fourth Proportional to 70,417.31, 105,626.14 and 17,826.80

Step by Step Solution

1. Step 1: Write the proportion equation
   70,417.31 : 105,626.14 = 17,826.80 : x
2. Step 2: Convert to fraction form
   70,417.31/105,626.14 = 17,826.80/x
3. Step 3: Cross multiply
   70,417.31x = 105,626.14 × 17,826.80
4. Step 4: Simplify right side
   70,417.31x = 1,882,975,499.85
5. Step 5: Solve for x
   x = 1,882,975,499.85/70,417.31
6. Step 6: Final answer
   x = 26,740.24