Finding the Fourth Proportional to 116,091.84, 160,208.64 and 65,789.76

Step by Step Solution

1. Step 1: Write the proportion equation
   116,091.84 : 160,208.64 = 65,789.76 : x
2. Step 2: Convert to fraction form
   116,091.84/160,208.64 = 65,789.76/x
3. Step 3: Cross multiply
   116,091.84x = 160,208.64 × 65,789.76
4. Step 4: Simplify right side
   116,091.84x = 10,540,087,975.53
5. Step 5: Solve for x
   x = 10,540,087,975.53/116,091.84
6. Step 6: Final answer
   x = 90,790.95