Finding the Fourth Proportional to 105,110.72, 157,662.24 and 31,236.80

Step by Step Solution

1. Step 1: Write the proportion equation
   105,110.72 : 157,662.24 = 31,236.80 : x
2. Step 2: Convert to fraction form
   105,110.72/157,662.24 = 31,236.80/x
3. Step 3: Cross multiply
   105,110.72x = 157,662.24 × 31,236.80
4. Step 4: Simplify right side
   105,110.72x = 4,924,863,858.43
5. Step 5: Solve for x
   x = 4,924,863,858.43/105,110.72
6. Step 6: Final answer
   x = 46,854.06