Finding the Fourth Proportional to 116,509.25, 160,781.24 and 65,521.98

Step by Step Solution

1. Step 1: Write the proportion equation
   116,509.25 : 160,781.24 = 65,521.98 : x
2. Step 2: Convert to fraction form
   116,509.25/160,781.24 = 65,521.98/x
3. Step 3: Cross multiply
   116,509.25x = 160,781.24 × 65,521.98
4. Step 4: Simplify right side
   116,509.25x = 10,534,705,355.46
5. Step 5: Solve for x
   x = 10,534,705,355.46/116,509.25
6. Step 6: Final answer
   x = 90,419.47