Finding the Fourth Proportional to 89,423, 134,155.23 and 26,240.54

Step by Step Solution

1. Step 1: Write the proportion equation
   89,423 : 134,155.23 = 26,240.54 : x
2. Step 2: Convert to fraction form
   89,423/134,155.23 = 26,240.54/x
3. Step 3: Cross multiply
   89,423x = 134,155.23 × 26,240.54
4. Step 4: Simplify right side
   89,423x = 3,520,305,679.02
5. Step 5: Solve for x
   x = 3,520,305,679.02/89,423
6. Step 6: Final answer
   x = 39,366.89