Finding the Fourth Proportional to 105,042.16, 157,563.42 and 31,170.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,042.16 : 157,563.42 = 31,170.16 : x
2. Step 2: Convert to fraction form
   105,042.16/157,563.42 = 31,170.16/x
3. Step 3: Cross multiply
   105,042.16x = 157,563.42 × 31,170.16
4. Step 4: Simplify right side
   105,042.16x = 4,911,277,011.55
5. Step 5: Solve for x
   x = 4,911,277,011.55/105,042.16
6. Step 6: Final answer
   x = 46,755.29