Finding the Fourth Proportional to 116,410.56, 160,627.68 and 65,417.28

Step by Step Solution

1. Step 1: Write the proportion equation
   116,410.56 : 160,627.68 = 65,417.28 : x
2. Step 2: Convert to fraction form
   116,410.56/160,627.68 = 65,417.28/x
3. Step 3: Cross multiply
   116,410.56x = 160,627.68 × 65,417.28
4. Step 4: Simplify right side
   116,410.56x = 10,507,825,918.31
5. Step 5: Solve for x
   x = 10,507,825,918.31/116,410.56
6. Step 6: Final answer
   x = 90,265.23