Finding the Fourth Proportional to 89,493.09, 134,155.80 and 30,287.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,493.09 : 134,155.80 = 30,287.31 : x
2. Step 2: Convert to fraction form
   89,493.09/134,155.80 = 30,287.31/x
3. Step 3: Cross multiply
   89,493.09x = 134,155.80 × 30,287.31
4. Step 4: Simplify right side
   89,493.09x = 4,063,218,302.90
5. Step 5: Solve for x
   x = 4,063,218,302.90/89,493.09
6. Step 6: Final answer
   x = 45,402.59