Finding the Fourth Proportional to 70,545.69, 105,817.16 and 17,238.02

Step by Step Solution

1. Step 1: Write the proportion equation
   70,545.69 : 105,817.16 = 17,238.02 : x
2. Step 2: Convert to fraction form
   70,545.69/105,817.16 = 17,238.02/x
3. Step 3: Cross multiply
   70,545.69x = 105,817.16 × 17,238.02
4. Step 4: Simplify right side
   70,545.69x = 1,824,078,320.42
5. Step 5: Solve for x
   x = 1,824,078,320.42/70,545.69
6. Step 6: Final answer
   x = 25,856.69