Finding the Fourth Proportional to 105,921.34, 158,903.88 and 31,043.94

Step by Step Solution

1. Step 1: Write the proportion equation
   105,921.34 : 158,903.88 = 31,043.94 : x
2. Step 2: Convert to fraction form
   105,921.34/158,903.88 = 31,043.94/x
3. Step 3: Cross multiply
   105,921.34x = 158,903.88 × 31,043.94
4. Step 4: Simplify right side
   105,921.34x = 4,933,002,516.49
5. Step 5: Solve for x
   x = 4,933,002,516.49/105,921.34
6. Step 6: Final answer
   x = 46,572.32