Finding the Fourth Proportional to 127,906.10, 191,859.15 and 72,610.10

Step by Step Solution

1. Step 1: Write the proportion equation
   127,906.10 : 191,859.15 = 72,610.10 : x
2. Step 2: Convert to fraction form
   127,906.10/191,859.15 = 72,610.10/x
3. Step 3: Cross multiply
   127,906.10x = 191,859.15 × 72,610.10
4. Step 4: Simplify right side
   127,906.10x = 13,930,912,067.42
5. Step 5: Solve for x
   x = 13,930,912,067.42/127,906.10
6. Step 6: Final answer
   x = 108,915.15