Finding the Fourth Proportional to 450,188.60, 675,146.72 and 236,838.89

Step by Step Solution

1. Step 1: Write the proportion equation
   450,188.60 : 675,146.72 = 236,838.89 : x
2. Step 2: Convert to fraction form
   450,188.60/675,146.72 = 236,838.89/x
3. Step 3: Cross multiply
   450,188.60x = 675,146.72 × 236,838.89
4. Step 4: Simplify right side
   450,188.60x = 159,900,997,568.10
5. Step 5: Solve for x
   x = 159,900,997,568.10/450,188.60
6. Step 6: Final answer
   x = 355,186.69