Finding the Fourth Proportional to 116,138.91, 160,273.28 and 65,162.68

Step by Step Solution

1. Step 1: Write the proportion equation
   116,138.91 : 160,273.28 = 65,162.68 : x
2. Step 2: Convert to fraction form
   116,138.91/160,273.28 = 65,162.68/x
3. Step 3: Cross multiply
   116,138.91x = 160,273.28 × 65,162.68
4. Step 4: Simplify right side
   116,138.91x = 10,443,836,219.41
5. Step 5: Solve for x
   x = 10,443,836,219.41/116,138.91
6. Step 6: Final answer
   x = 89,925.38