Finding the Fourth Proportional to 40,119.35, 55,365.56 and 21,970.83

Step by Step Solution

1. Step 1: Write the proportion equation
   40,119.35 : 55,365.56 = 21,970.83 : x
2. Step 2: Convert to fraction form
   40,119.35/55,365.56 = 21,970.83/x
3. Step 3: Cross multiply
   40,119.35x = 55,365.56 × 21,970.83
4. Step 4: Simplify right side
   40,119.35x = 1,216,427,196.76
5. Step 5: Solve for x
   x = 1,216,427,196.76/40,119.35
6. Step 6: Final answer
   x = 30,320.22