Finding the Fourth Proportional to 116,607.43, 160,921.37 and 65,621.98

Step by Step Solution

1. Step 1: Write the proportion equation
   116,607.43 : 160,921.37 = 65,621.98 : x
2. Step 2: Convert to fraction form
   116,607.43/160,921.37 = 65,621.98/x
3. Step 3: Cross multiply
   116,607.43x = 160,921.37 × 65,621.98
4. Step 4: Simplify right side
   116,607.43x = 10,559,978,923.71
5. Step 5: Solve for x
   x = 10,559,978,923.71/116,607.43
6. Step 6: Final answer
   x = 90,560.09