Finding the Fourth Proportional to 300,377.28, 450,500.64 and 89,958.72

Step by Step Solution

1. Step 1: Write the proportion equation
   300,377.28 : 450,500.64 = 89,958.72 : x
2. Step 2: Convert to fraction form
   300,377.28/450,500.64 = 89,958.72/x
3. Step 3: Cross multiply
   300,377.28x = 450,500.64 × 89,958.72
4. Step 4: Simplify right side
   300,377.28x = 40,526,460,933.58
5. Step 5: Solve for x
   x = 40,526,460,933.58/300,377.28
6. Step 6: Final answer
   x = 134,918.53