Finding the Fourth Proportional to 300,345.32, 450,451.42 and 89,955.56

Step by Step Solution

1. Step 1: Write the proportion equation
   300,345.32 : 450,451.42 = 89,955.56 : x
2. Step 2: Convert to fraction form
   300,345.32/450,451.42 = 89,955.56/x
3. Step 3: Cross multiply
   300,345.32x = 450,451.42 × 89,955.56
4. Step 4: Simplify right side
   300,345.32x = 40,520,609,738.90
5. Step 5: Solve for x
   x = 40,520,609,738.90/300,345.32
6. Step 6: Final answer
   x = 134,913.40