Finding the Fourth Proportional to 92,671.78, 127,791.57 and 79,287.34

Step by Step Solution

1. Step 1: Write the proportion equation
   92,671.78 : 127,791.57 = 79,287.34 : x
2. Step 2: Convert to fraction form
   92,671.78/127,791.57 = 79,287.34/x
3. Step 3: Cross multiply
   92,671.78x = 127,791.57 × 79,287.34
4. Step 4: Simplify right side
   92,671.78x = 10,132,253,659.72
5. Step 5: Solve for x
   x = 10,132,253,659.72/92,671.78
6. Step 6: Final answer
   x = 109,334.83