Finding the Fourth Proportional to 116,020.64, 160,111.84 and 65,719.68

Step by Step Solution

1. Step 1: Write the proportion equation
   116,020.64 : 160,111.84 = 65,719.68 : x
2. Step 2: Convert to fraction form
   116,020.64/160,111.84 = 65,719.68/x
3. Step 3: Cross multiply
   116,020.64x = 160,111.84 × 65,719.68
4. Step 4: Simplify right side
   116,020.64x = 10,522,498,889.01
5. Step 5: Solve for x
   x = 10,522,498,889.01/116,020.64
6. Step 6: Final answer
   x = 90,695.06