Finding the Fourth Proportional to 111,645.90, 167,610.96 and 72,367.38

Step by Step Solution

1. Step 1: Write the proportion equation
   111,645.90 : 167,610.96 = 72,367.38 : x
2. Step 2: Convert to fraction form
   111,645.90/167,610.96 = 72,367.38/x
3. Step 3: Cross multiply
   111,645.90x = 167,610.96 × 72,367.38
4. Step 4: Simplify right side
   111,645.90x = 12,129,566,034.48
5. Step 5: Solve for x
   x = 12,129,566,034.48/111,645.90
6. Step 6: Final answer
   x = 108,643.18