Finding the Fourth Proportional to 72,131.13, 108,196.74 and 27,778.77

Step by Step Solution

1. Step 1: Write the proportion equation
   72,131.13 : 108,196.74 = 27,778.77 : x
2. Step 2: Convert to fraction form
   72,131.13/108,196.74 = 27,778.77/x
3. Step 3: Cross multiply
   72,131.13x = 108,196.74 × 27,778.77
4. Step 4: Simplify right side
   72,131.13x = 3,005,572,355.21
5. Step 5: Solve for x
   x = 3,005,572,355.21/72,131.13
6. Step 6: Final answer
   x = 41,668.17