Finding the Fourth Proportional to 115,978.14, 160,047.12 and 68,234.58

Step by Step Solution

1. Step 1: Write the proportion equation
   115,978.14 : 160,047.12 = 68,234.58 : x
2. Step 2: Convert to fraction form
   115,978.14/160,047.12 = 68,234.58/x
3. Step 3: Cross multiply
   115,978.14x = 160,047.12 × 68,234.58
4. Step 4: Simplify right side
   115,978.14x = 10,920,748,013.41
5. Step 5: Solve for x
   x = 10,920,748,013.41/115,978.14
6. Step 6: Final answer
   x = 94,162.12