Finding the Fourth Proportional to 126,426.82, 189,576.74 and 42,157.15

Step by Step Solution

1. Step 1: Write the proportion equation
   126,426.82 : 189,576.74 = 42,157.15 : x
2. Step 2: Convert to fraction form
   126,426.82/189,576.74 = 42,157.15/x
3. Step 3: Cross multiply
   126,426.82x = 189,576.74 × 42,157.15
4. Step 4: Simplify right side
   126,426.82x = 7,992,015,064.69
5. Step 5: Solve for x
   x = 7,992,015,064.69/126,426.82
6. Step 6: Final answer
   x = 63,214.55