Finding the Fourth Proportional to 105,042, 157,588.92 and 31,170

Step by Step Solution

1. Step 1: Write the proportion equation
   105,042 : 157,588.92 = 31,170 : x
2. Step 2: Convert to fraction form
   105,042/157,588.92 = 31,170/x
3. Step 3: Cross multiply
   105,042x = 157,588.92 × 31,170
4. Step 4: Simplify right side
   105,042x = 4,912,046,636.40
5. Step 5: Solve for x
   x = 4,912,046,636.40/105,042
6. Step 6: Final answer
   x = 46,762.69