Finding the Fourth Proportional to 105,112.88, 157,718.56 and 45,940.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,112.88 : 157,718.56 = 45,940.88 : x
2. Step 2: Convert to fraction form
   105,112.88/157,718.56 = 45,940.88/x
3. Step 3: Cross multiply
   105,112.88x = 157,718.56 × 45,940.88
4. Step 4: Simplify right side
   105,112.88x = 7,245,729,438.73
5. Step 5: Solve for x
   x = 7,245,729,438.73/105,112.88
6. Step 6: Final answer
   x = 68,932.84