Finding the Fourth Proportional to 116,164.52, 160,355.97 and 78,489.80

Step by Step Solution

1. Step 1: Write the proportion equation
   116,164.52 : 160,355.97 = 78,489.80 : x
2. Step 2: Convert to fraction form
   116,164.52/160,355.97 = 78,489.80/x
3. Step 3: Cross multiply
   116,164.52x = 160,355.97 × 78,489.80
4. Step 4: Simplify right side
   116,164.52x = 12,586,308,014.11
5. Step 5: Solve for x
   x = 12,586,308,014.11/116,164.52
6. Step 6: Final answer
   x = 108,348.99