Finding the Fourth Proportional to 111,647.90, 167,613.96 and 72,369.38

Step by Step Solution

1. Step 1: Write the proportion equation
   111,647.90 : 167,613.96 = 72,369.38 : x
2. Step 2: Convert to fraction form
   111,647.90/167,613.96 = 72,369.38/x
3. Step 3: Cross multiply
   111,647.90x = 167,613.96 × 72,369.38
4. Step 4: Simplify right side
   111,647.90x = 12,130,118,364.54
5. Step 5: Solve for x
   x = 12,130,118,364.54/111,647.90
6. Step 6: Final answer
   x = 108,646.18