Finding the Fourth Proportional to 116,408.92, 160,648.56 and 65,422.68

Step by Step Solution

1. Step 1: Write the proportion equation
   116,408.92 : 160,648.56 = 65,422.68 : x
2. Step 2: Convert to fraction form
   116,408.92/160,648.56 = 65,422.68/x
3. Step 3: Cross multiply
   116,408.92x = 160,648.56 × 65,422.68
4. Step 4: Simplify right side
   116,408.92x = 10,510,059,333.34
5. Step 5: Solve for x
   x = 10,510,059,333.34/116,408.92
6. Step 6: Final answer
   x = 90,285.69