Finding the Fourth Proportional to 52,530, 72,491.40 and 30,174

Step by Step Solution

1. Step 1: Write the proportion equation
   52,530 : 72,491.40 = 30,174 : x
2. Step 2: Convert to fraction form
   52,530/72,491.40 = 30,174/x
3. Step 3: Cross multiply
   52,530x = 72,491.40 × 30,174
4. Step 4: Simplify right side
   52,530x = 2,187,355,503.60
5. Step 5: Solve for x
   x = 2,187,355,503.60/52,530
6. Step 6: Final answer
   x = 41,640.12