Finding the Fourth Proportional to 89,343.12, 134,002.20 and 30,171.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,343.12 : 134,002.20 = 30,171.12 : x
2. Step 2: Convert to fraction form
   89,343.12/134,002.20 = 30,171.12/x
3. Step 3: Cross multiply
   89,343.12x = 134,002.20 × 30,171.12
4. Step 4: Simplify right side
   89,343.12x = 4,042,996,456.46
5. Step 5: Solve for x
   x = 4,042,996,456.46/89,343.12
6. Step 6: Final answer
   x = 45,252.47