Finding the Fourth Proportional to 42,440.79, 63,667.89 and 13,968.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,440.79 : 63,667.89 = 13,968.84 : x
2. Step 2: Convert to fraction form
   42,440.79/63,667.89 = 13,968.84/x
3. Step 3: Cross multiply
   42,440.79x = 63,667.89 × 13,968.84
4. Step 4: Simplify right side
   42,440.79x = 889,366,568.55
5. Step 5: Solve for x
   x = 889,366,568.55/42,440.79
6. Step 6: Final answer
   x = 20,955.47