Finding the Fourth Proportional to 89,638.48, 134,456.50 and 30,515.37

Step by Step Solution

1. Step 1: Write the proportion equation
   89,638.48 : 134,456.50 = 30,515.37 : x
2. Step 2: Convert to fraction form
   89,638.48/134,456.50 = 30,515.37/x
3. Step 3: Cross multiply
   89,638.48x = 134,456.50 × 30,515.37
4. Step 4: Simplify right side
   89,638.48x = 4,102,989,846.41
5. Step 5: Solve for x
   x = 4,102,989,846.41/89,638.48
6. Step 6: Final answer
   x = 45,772.64