Finding the Fourth Proportional to 48,825, 67,385.69 and 30,921.67

Step by Step Solution

1. Step 1: Write the proportion equation
   48,825 : 67,385.69 = 30,921.67 : x
2. Step 2: Convert to fraction form
   48,825/67,385.69 = 30,921.67/x
3. Step 3: Cross multiply
   48,825x = 67,385.69 × 30,921.67
4. Step 4: Simplify right side
   48,825x = 2,083,678,068.90
5. Step 5: Solve for x
   x = 2,083,678,068.90/48,825
6. Step 6: Final answer
   x = 42,676.46