Finding the Fourth Proportional to 105,513.75, 158,270.63 and 31,641.75

Step by Step Solution

1. Step 1: Write the proportion equation
   105,513.75 : 158,270.63 = 31,641.75 : x
2. Step 2: Convert to fraction form
   105,513.75/158,270.63 = 31,641.75/x
3. Step 3: Cross multiply
   105,513.75x = 158,270.63 × 31,641.75
4. Step 4: Simplify right side
   105,513.75x = 5,007,959,548.59
5. Step 5: Solve for x
   x = 5,007,959,548.59/105,513.75
6. Step 6: Final answer
   x = 47,462.63