Finding the Fourth Proportional to 42,016.12, 63,023.40 and 10,426.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,016.12 : 63,023.40 = 10,426.25 : x
2. Step 2: Convert to fraction form
   42,016.12/63,023.40 = 10,426.25/x
3. Step 3: Cross multiply
   42,016.12x = 63,023.40 × 10,426.25
4. Step 4: Simplify right side
   42,016.12x = 657,097,881.81
5. Step 5: Solve for x
   x = 657,097,881.81/42,016.12
6. Step 6: Final answer
   x = 15,639.19