Finding the Fourth Proportional to 115,978.91, 160,048.17 and 68,235.32

Step by Step Solution

1. Step 1: Write the proportion equation
   115,978.91 : 160,048.17 = 68,235.32 : x
2. Step 2: Convert to fraction form
   115,978.91/160,048.17 = 68,235.32/x
3. Step 3: Cross multiply
   115,978.91x = 160,048.17 × 68,235.32
4. Step 4: Simplify right side
   115,978.91x = 10,920,937,295.12
5. Step 5: Solve for x
   x = 10,920,937,295.12/115,978.91
6. Step 6: Final answer
   x = 94,163.14