Finding the Fourth Proportional to 105,911.88, 158,889.70 and 31,034.47

Step by Step Solution

1. Step 1: Write the proportion equation
   105,911.88 : 158,889.70 = 31,034.47 : x
2. Step 2: Convert to fraction form
   105,911.88/158,889.70 = 31,034.47/x
3. Step 3: Cross multiply
   105,911.88x = 158,889.70 × 31,034.47
4. Step 4: Simplify right side
   105,911.88x = 4,931,057,627.96
5. Step 5: Solve for x
   x = 4,931,057,627.96/105,911.88
6. Step 6: Final answer
   x = 46,558.12