Finding the Fourth Proportional to 40,119.07, 55,365.18 and 21,970.56

Step by Step Solution

1. Step 1: Write the proportion equation
   40,119.07 : 55,365.18 = 21,970.56 : x
2. Step 2: Convert to fraction form
   40,119.07/55,365.18 = 21,970.56/x
3. Step 3: Cross multiply
   40,119.07x = 55,365.18 × 21,970.56
4. Step 4: Simplify right side
   40,119.07x = 1,216,404,009.10
5. Step 5: Solve for x
   x = 1,216,404,009.10/40,119.07
6. Step 6: Final answer
   x = 30,319.85