Finding the Fourth Proportional to 408,036.15, 612,111.83 and 127,524.15

Step by Step Solution

1. Step 1: Write the proportion equation
   408,036.15 : 612,111.83 = 127,524.15 : x
2. Step 2: Convert to fraction form
   408,036.15/612,111.83 = 127,524.15/x
3. Step 3: Cross multiply
   408,036.15x = 612,111.83 × 127,524.15
4. Step 4: Simplify right side
   408,036.15x = 78,059,040,188.07
5. Step 5: Solve for x
   x = 78,059,040,188.07/408,036.15
6. Step 6: Final answer
   x = 191,304.23