Finding the Fourth Proportional to 23,281.25, 32,105.78 and 15,641.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,281.25 : 32,105.78 = 15,641.78 : x
2. Step 2: Convert to fraction form
   23,281.25/32,105.78 = 15,641.78/x
3. Step 3: Cross multiply
   23,281.25x = 32,105.78 × 15,641.78
4. Step 4: Simplify right side
   23,281.25x = 502,191,547.49
5. Step 5: Solve for x
   x = 502,191,547.49/23,281.25
6. Step 6: Final answer
   x = 21,570.65