Finding the Fourth Proportional to 105,108.15, 157,662.23 and 31,236.15

Step by Step Solution

1. Step 1: Write the proportion equation
   105,108.15 : 157,662.23 = 31,236.15 : x
2. Step 2: Convert to fraction form
   105,108.15/157,662.23 = 31,236.15/x
3. Step 3: Cross multiply
   105,108.15x = 157,662.23 × 31,236.15
4. Step 4: Simplify right side
   105,108.15x = 4,924,760,909.43
5. Step 5: Solve for x
   x = 4,924,760,909.43/105,108.15
6. Step 6: Final answer
   x = 46,854.23