Finding the Fourth Proportional to 116,204.72, 160,360.52 and 65,218.64

Step by Step Solution

1. Step 1: Write the proportion equation
   116,204.72 : 160,360.52 = 65,218.64 : x
2. Step 2: Convert to fraction form
   116,204.72/160,360.52 = 65,218.64/x
3. Step 3: Cross multiply
   116,204.72x = 160,360.52 × 65,218.64
4. Step 4: Simplify right side
   116,204.72x = 10,458,495,024.09
5. Step 5: Solve for x
   x = 10,458,495,024.09/116,204.72
6. Step 6: Final answer
   x = 90,000.60