Finding the Fourth Proportional to 115,969.76, 160,069.80 and 68,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   115,969.76 : 160,069.80 = 68,238.50 : x
2. Step 2: Convert to fraction form
   115,969.76/160,069.80 = 68,238.50/x
3. Step 3: Cross multiply
   115,969.76x = 160,069.80 × 68,238.50
4. Step 4: Simplify right side
   115,969.76x = 10,922,923,047.30
5. Step 5: Solve for x
   x = 10,922,923,047.30/115,969.76
6. Step 6: Final answer
   x = 94,187.68