Finding the Fourth Proportional to 42,064.36, 63,082.90 and 13,976.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,064.36 : 63,082.90 = 13,976.88 : x
2. Step 2: Convert to fraction form
   42,064.36/63,082.90 = 13,976.88/x
3. Step 3: Cross multiply
   42,064.36x = 63,082.90 × 13,976.88
4. Step 4: Simplify right side
   42,064.36x = 881,701,825.64
5. Step 5: Solve for x
   x = 881,701,825.64/42,064.36
6. Step 6: Final answer
   x = 20,960.78