Finding the Fourth Proportional to 116,612.65, 160,923.59 and 64,929.25

Step by Step Solution

1. Step 1: Write the proportion equation
   116,612.65 : 160,923.59 = 64,929.25 : x
2. Step 2: Convert to fraction form
   116,612.65/160,923.59 = 64,929.25/x
3. Step 3: Cross multiply
   116,612.65x = 160,923.59 × 64,929.25
4. Step 4: Simplify right side
   116,612.65x = 10,448,647,201.39
5. Step 5: Solve for x
   x = 10,448,647,201.39/116,612.65
6. Step 6: Final answer
   x = 89,601.32