Finding the Fourth Proportional to 117,456.16, 162,085.68 and 65,773.28

Step by Step Solution

1. Step 1: Write the proportion equation
   117,456.16 : 162,085.68 = 65,773.28 : x
2. Step 2: Convert to fraction form
   117,456.16/162,085.68 = 65,773.28/x
3. Step 3: Cross multiply
   117,456.16x = 162,085.68 × 65,773.28
4. Step 4: Simplify right side
   117,456.16x = 10,660,906,814.63
5. Step 5: Solve for x
   x = 10,660,906,814.63/117,456.16
6. Step 6: Final answer
   x = 90,764.99