Finding the Fourth Proportional to 118,779, 163,910.16 and 71,058.72

Step by Step Solution

1. Step 1: Write the proportion equation
   118,779 : 163,910.16 = 71,058.72 : x
2. Step 2: Convert to fraction form
   118,779/163,910.16 = 71,058.72/x
3. Step 3: Cross multiply
   118,779x = 163,910.16 × 71,058.72
4. Step 4: Simplify right side
   118,779x = 11,647,246,164.60
5. Step 5: Solve for x
   x = 11,647,246,164.60/118,779
6. Step 6: Final answer
   x = 98,058.13