Finding the Fourth Proportional to 105,993.61, 158,991.32 and 31,114.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105,993.61 : 158,991.32 = 31,114.98 : x
2. Step 2: Convert to fraction form
   105,993.61/158,991.32 = 31,114.98/x
3. Step 3: Cross multiply
   105,993.61x = 158,991.32 × 31,114.98
4. Step 4: Simplify right side
   105,993.61x = 4,947,011,819.76
5. Step 5: Solve for x
   x = 4,947,011,819.76/105,993.61
6. Step 6: Final answer
   x = 46,672.74