Finding the Fourth Proportional to 236,363.75, 326,179.89 and 128,931.47

Step by Step Solution

1. Step 1: Write the proportion equation
   236,363.75 : 326,179.89 = 128,931.47 : x
2. Step 2: Convert to fraction form
   236,363.75/326,179.89 = 128,931.47/x
3. Step 3: Cross multiply
   236,363.75x = 326,179.89 × 128,931.47
4. Step 4: Simplify right side
   236,363.75x = 42,054,852,849.17
5. Step 5: Solve for x
   x = 42,054,852,849.17/236,363.75
6. Step 6: Final answer
   x = 177,924.29