Finding the Fourth Proportional to 89,585.60, 134,390.75 and 30,405.38

Step by Step Solution

1. Step 1: Write the proportion equation
   89,585.60 : 134,390.75 = 30,405.38 : x
2. Step 2: Convert to fraction form
   89,585.60/134,390.75 = 30,405.38/x
3. Step 3: Cross multiply
   89,585.60x = 134,390.75 × 30,405.38
4. Step 4: Simplify right side
   89,585.60x = 4,086,200,998.25
5. Step 5: Solve for x
   x = 4,086,200,998.25/89,585.60
6. Step 6: Final answer
   x = 45,612.25