Finding the Fourth Proportional to 126,401.98, 189,603.49 and 31,631.91

Step by Step Solution

1. Step 1: Write the proportion equation
   126,401.98 : 189,603.49 = 31,631.91 : x
2. Step 2: Convert to fraction form
   126,401.98/189,603.49 = 31,631.91/x
3. Step 3: Cross multiply
   126,401.98x = 189,603.49 × 31,631.91
4. Step 4: Simplify right side
   126,401.98x = 5,997,519,583.35
5. Step 5: Solve for x
   x = 5,997,519,583.35/126,401.98
6. Step 6: Final answer
   x = 47,447.99