Finding the Fourth Proportional to 118,498.10, 163,419 and 92,660

Step by Step Solution

1. Step 1: Write the proportion equation
   118,498.10 : 163,419 = 92,660 : x
2. Step 2: Convert to fraction form
   118,498.10/163,419 = 92,660/x
3. Step 3: Cross multiply
   118,498.10x = 163,419 × 92,660
4. Step 4: Simplify right side
   118,498.10x = 15,142,404,540
5. Step 5: Solve for x
   x = 15,142,404,540/118,498.10
6. Step 6: Final answer
   x = 127,786.05