Finding the Fourth Proportional to 40,118.21, 55,364.00 and 21,969.70

Step by Step Solution

1. Step 1: Write the proportion equation
   40,118.21 : 55,364.00 = 21,969.70 : x
2. Step 2: Convert to fraction form
   40,118.21/55,364.00 = 21,969.70/x
3. Step 3: Cross multiply
   40,118.21x = 55,364.00 × 21,969.70
4. Step 4: Simplify right side
   40,118.21x = 1,216,330,222.54
5. Step 5: Solve for x
   x = 1,216,330,222.54/40,118.21
6. Step 6: Final answer
   x = 30,318.66