Finding the Fourth Proportional to 127,960.06, 191,940.10 and 65,590.78

Step by Step Solution

1. Step 1: Write the proportion equation
   127,960.06 : 191,940.10 = 65,590.78 : x
2. Step 2: Convert to fraction form
   127,960.06/191,940.10 = 65,590.78/x
3. Step 3: Cross multiply
   127,960.06x = 191,940.10 × 65,590.78
4. Step 4: Simplify right side
   127,960.06x = 12,589,500,872.28
5. Step 5: Solve for x
   x = 12,589,500,872.28/127,960.06
6. Step 6: Final answer
   x = 98,386.18