Finding the Fourth Proportional to 81,061.44, 121,590.72 and 25,656

Step by Step Solution

1. Step 1: Write the proportion equation
   81,061.44 : 121,590.72 = 25,656 : x
2. Step 2: Convert to fraction form
   81,061.44/121,590.72 = 25,656/x
3. Step 3: Cross multiply
   81,061.44x = 121,590.72 × 25,656
4. Step 4: Simplify right side
   81,061.44x = 3,119,531,512.32
5. Step 5: Solve for x
   x = 3,119,531,512.32/81,061.44
6. Step 6: Final answer
   x = 38,483.54