Finding the Fourth Proportional to 70,538.67, 105,826.23 and 26,178.09

Step by Step Solution

1. Step 1: Write the proportion equation
   70,538.67 : 105,826.23 = 26,178.09 : x
2. Step 2: Convert to fraction form
   70,538.67/105,826.23 = 26,178.09/x
3. Step 3: Cross multiply
   70,538.67x = 105,826.23 × 26,178.09
4. Step 4: Simplify right side
   70,538.67x = 2,770,328,573.30
5. Step 5: Solve for x
   x = 2,770,328,573.30/70,538.67
6. Step 6: Final answer
   x = 39,273.90