Finding the Fourth Proportional to 116,003.36, 160,079.28 and 65,702.72

Step by Step Solution

1. Step 1: Write the proportion equation
   116,003.36 : 160,079.28 = 65,702.72 : x
2. Step 2: Convert to fraction form
   116,003.36/160,079.28 = 65,702.72/x
3. Step 3: Cross multiply
   116,003.36x = 160,079.28 × 65,702.72
4. Step 4: Simplify right side
   116,003.36x = 10,517,644,111.64
5. Step 5: Solve for x
   x = 10,517,644,111.64/116,003.36
6. Step 6: Final answer
   x = 90,666.72