Finding the Fourth Proportional to 111,985.50, 167,981.52 and 28,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,985.50 : 167,981.52 = 28,879.50 : x
2. Step 2: Convert to fraction form
   111,985.50/167,981.52 = 28,879.50/x
3. Step 3: Cross multiply
   111,985.50x = 167,981.52 × 28,879.50
4. Step 4: Simplify right side
   111,985.50x = 4,851,222,306.84
5. Step 5: Solve for x
   x = 4,851,222,306.84/111,985.50
6. Step 6: Final answer
   x = 43,320.09