Finding the Fourth Proportional to 236,364.89, 326,172.83 and 128,931.24

Step by Step Solution

1. Step 1: Write the proportion equation
   236,364.89 : 326,172.83 = 128,931.24 : x
2. Step 2: Convert to fraction form
   236,364.89/326,172.83 = 128,931.24/x
3. Step 3: Cross multiply
   236,364.89x = 326,172.83 × 128,931.24
4. Step 4: Simplify right side
   236,364.89x = 42,053,868,004.70
5. Step 5: Solve for x
   x = 42,053,868,004.70/236,364.89
6. Step 6: Final answer
   x = 177,919.27