Finding the Fourth Proportional to 111,978.16, 154,518.32 and 68,950.80

Step by Step Solution

1. Step 1: Write the proportion equation
   111,978.16 : 154,518.32 = 68,950.80 : x
2. Step 2: Convert to fraction form
   111,978.16/154,518.32 = 68,950.80/x
3. Step 3: Cross multiply
   111,978.16x = 154,518.32 × 68,950.80
4. Step 4: Simplify right side
   111,978.16x = 10,654,161,778.66
5. Step 5: Solve for x
   x = 10,654,161,778.66/111,978.16
6. Step 6: Final answer
   x = 95,145.00