Finding the Fourth Proportional to 185,146.89, 277,245.96 and 128,141.82

Step by Step Solution

1. Step 1: Write the proportion equation
   185,146.89 : 277,245.96 = 128,141.82 : x
2. Step 2: Convert to fraction form
   185,146.89/277,245.96 = 128,141.82/x
3. Step 3: Cross multiply
   185,146.89x = 277,245.96 × 128,141.82
4. Step 4: Simplify right side
   185,146.89x = 35,526,800,515.82
5. Step 5: Solve for x
   x = 35,526,800,515.82/185,146.89
6. Step 6: Final answer
   x = 191,884.41