Finding the Fourth Proportional to 236,341.50, 326,155.18 and 128,911.55

Step by Step Solution

1. Step 1: Write the proportion equation
   236,341.50 : 326,155.18 = 128,911.55 : x
2. Step 2: Convert to fraction form
   236,341.50/326,155.18 = 128,911.55/x
3. Step 3: Cross multiply
   236,341.50x = 326,155.18 × 128,911.55
4. Step 4: Simplify right side
   236,341.50x = 42,045,170,280.17
5. Step 5: Solve for x
   x = 42,045,170,280.17/236,341.50
6. Step 6: Final answer
   x = 177,900.08