Finding the Fourth Proportional to 105,748.88, 158,623.31 and 31,876.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,748.88 : 158,623.31 = 31,876.88 : x
2. Step 2: Convert to fraction form
   105,748.88/158,623.31 = 31,876.88/x
3. Step 3: Cross multiply
   105,748.88x = 158,623.31 × 31,876.88
4. Step 4: Simplify right side
   105,748.88x = 5,056,415,504.65
5. Step 5: Solve for x
   x = 5,056,415,504.65/105,748.88
6. Step 6: Final answer
   x = 47,815.31