Finding the Fourth Proportional to 77,072.22, 115,617.59 and 27,142.00

Step by Step Solution

1. Step 1: Write the proportion equation
   77,072.22 : 115,617.59 = 27,142.00 : x
2. Step 2: Convert to fraction form
   77,072.22/115,617.59 = 27,142.00/x
3. Step 3: Cross multiply
   77,072.22x = 115,617.59 × 27,142.00
4. Step 4: Simplify right side
   77,072.22x = 3,138,092,049.69
5. Step 5: Solve for x
   x = 3,138,092,049.69/77,072.22
6. Step 6: Final answer
   x = 40,716.25