Finding the Fourth Proportional to 105,111.74, 157,716.81 and 45,939.71

Step by Step Solution

1. Step 1: Write the proportion equation
   105,111.74 : 157,716.81 = 45,939.71 : x
2. Step 2: Convert to fraction form
   105,111.74/157,716.81 = 45,939.71/x
3. Step 3: Cross multiply
   105,111.74x = 157,716.81 × 45,939.71
4. Step 4: Simplify right side
   105,111.74x = 7,245,464,907.82
5. Step 5: Solve for x
   x = 7,245,464,907.82/105,111.74
6. Step 6: Final answer
   x = 68,931.07