Finding the Fourth Proportional to 70,456.59, 105,683.32 and 17,148.80

Step by Step Solution

1. Step 1: Write the proportion equation
   70,456.59 : 105,683.32 = 17,148.80 : x
2. Step 2: Convert to fraction form
   70,456.59/105,683.32 = 17,148.80/x
3. Step 3: Cross multiply
   70,456.59x = 105,683.32 × 17,148.80
4. Step 4: Simplify right side
   70,456.59x = 1,812,341,503.86
5. Step 5: Solve for x
   x = 1,812,341,503.86/70,456.59
6. Step 6: Final answer
   x = 25,722.81