Finding the Fourth Proportional to 105,915.34, 158,894.87 and 31,037.92

Step by Step Solution

1. Step 1: Write the proportion equation
   105,915.34 : 158,894.87 = 31,037.92 : x
2. Step 2: Convert to fraction form
   105,915.34/158,894.87 = 31,037.92/x
3. Step 3: Cross multiply
   105,915.34x = 158,894.87 × 31,037.92
4. Step 4: Simplify right side
   105,915.34x = 4,931,766,866.71
5. Step 5: Solve for x
   x = 4,931,766,866.71/105,915.34
6. Step 6: Final answer
   x = 46,563.29