Finding the Fourth Proportional to 70,017.36, 105,025.50 and 17,426.49

Step by Step Solution

1. Step 1: Write the proportion equation
   70,017.36 : 105,025.50 = 17,426.49 : x
2. Step 2: Convert to fraction form
   70,017.36/105,025.50 = 17,426.49/x
3. Step 3: Cross multiply
   70,017.36x = 105,025.50 × 17,426.49
4. Step 4: Simplify right side
   70,017.36x = 1,830,225,825.50
5. Step 5: Solve for x
   x = 1,830,225,825.50/70,017.36
6. Step 6: Final answer
   x = 26,139.60