Finding the Fourth Proportional to 40,117.34, 55,362.79 and 21,968.82

Step by Step Solution

1. Step 1: Write the proportion equation
   40,117.34 : 55,362.79 = 21,968.82 : x
2. Step 2: Convert to fraction form
   40,117.34/55,362.79 = 21,968.82/x
3. Step 3: Cross multiply
   40,117.34x = 55,362.79 × 21,968.82
4. Step 4: Simplify right side
   40,117.34x = 1,216,255,251.69
5. Step 5: Solve for x
   x = 1,216,255,251.69/40,117.34
6. Step 6: Final answer
   x = 30,317.45