Finding the Fourth Proportional to 72,514.43, 100,069.49 and 40,683.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,514.43 : 100,069.49 = 40,683.25 : x
2. Step 2: Convert to fraction form
   72,514.43/100,069.49 = 40,683.25/x
3. Step 3: Cross multiply
   72,514.43x = 100,069.49 × 40,683.25
4. Step 4: Simplify right side
   72,514.43x = 4,071,152,079.04
5. Step 5: Solve for x
   x = 4,071,152,079.04/72,514.43
6. Step 6: Final answer
   x = 56,142.65