Finding the Fourth Proportional to 42,051.29, 63,087.56 and 13,971.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,051.29 : 63,087.56 = 13,971.49 : x
2. Step 2: Convert to fraction form
   42,051.29/63,087.56 = 13,971.49/x
3. Step 3: Cross multiply
   42,051.29x = 63,087.56 × 13,971.49
4. Step 4: Simplify right side
   42,051.29x = 881,427,090.87
5. Step 5: Solve for x
   x = 881,427,090.87/42,051.29
6. Step 6: Final answer
   x = 20,960.76