Finding the Fourth Proportional to 89,720.69, 134,598.72 and 25,679.43

Step by Step Solution

1. Step 1: Write the proportion equation
   89,720.69 : 134,598.72 = 25,679.43 : x
2. Step 2: Convert to fraction form
   89,720.69/134,598.72 = 25,679.43/x
3. Step 3: Cross multiply
   89,720.69x = 134,598.72 × 25,679.43
4. Step 4: Simplify right side
   89,720.69x = 3,456,418,408.33
5. Step 5: Solve for x
   x = 3,456,418,408.33/89,720.69
6. Step 6: Final answer
   x = 38,524.21