Finding the Fourth Proportional to 89,487.09, 134,146.80 and 30,281.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,487.09 : 134,146.80 = 30,281.31 : x
2. Step 2: Convert to fraction form
   89,487.09/134,146.80 = 30,281.31/x
3. Step 3: Cross multiply
   89,487.09x = 134,146.80 × 30,281.31
4. Step 4: Simplify right side
   89,487.09x = 4,062,140,836.31
5. Step 5: Solve for x
   x = 4,062,140,836.31/89,487.09
6. Step 6: Final answer
   x = 45,393.60