Finding the Fourth Proportional to 116,325.79, 160,528.59 and 65,339.30

Step by Step Solution

1. Step 1: Write the proportion equation
   116,325.79 : 160,528.59 = 65,339.30 : x
2. Step 2: Convert to fraction form
   116,325.79/160,528.59 = 65,339.30/x
3. Step 3: Cross multiply
   116,325.79x = 160,528.59 × 65,339.30
4. Step 4: Simplify right side
   116,325.79x = 10,488,826,101.91
5. Step 5: Solve for x
   x = 10,488,826,101.91/116,325.79
6. Step 6: Final answer
   x = 90,167.68