Finding the Fourth Proportional to 111,879.88, 167,819.94 and 78,747.82

Step by Step Solution

1. Step 1: Write the proportion equation
   111,879.88 : 167,819.94 = 78,747.82 : x
2. Step 2: Convert to fraction form
   111,879.88/167,819.94 = 78,747.82/x
3. Step 3: Cross multiply
   111,879.88x = 167,819.94 × 78,747.82
4. Step 4: Simplify right side
   111,879.88x = 13,215,454,427.53
5. Step 5: Solve for x
   x = 13,215,454,427.53/111,879.88
6. Step 6: Final answer
   x = 118,121.81