Finding the Fourth Proportional to 42,065.05, 63,083.92 and 13,977.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,065.05 : 63,083.92 = 13,977.56 : x
2. Step 2: Convert to fraction form
   42,065.05/63,083.92 = 13,977.56/x
3. Step 3: Cross multiply
   42,065.05x = 63,083.92 × 13,977.56
4. Step 4: Simplify right side
   42,065.05x = 881,759,399.60
5. Step 5: Solve for x
   x = 881,759,399.60/42,065.05
6. Step 6: Final answer
   x = 20,961.81