Finding the Fourth Proportional to 115,978.40, 160,047.48 and 68,234.82

Step by Step Solution

1. Step 1: Write the proportion equation
   115,978.40 : 160,047.48 = 68,234.82 : x
2. Step 2: Convert to fraction form
   115,978.40/160,047.48 = 68,234.82/x
3. Step 3: Cross multiply
   115,978.40x = 160,047.48 × 68,234.82
4. Step 4: Simplify right side
   115,978.40x = 10,920,810,989.25
5. Step 5: Solve for x
   x = 10,920,810,989.25/115,978.40
6. Step 6: Final answer
   x = 94,162.46