Finding the Fourth Proportional to 72,208.34, 99,672.60 and 49,622.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,208.34 : 99,672.60 = 49,622.12 : x
2. Step 2: Convert to fraction form
   72,208.34/99,672.60 = 49,622.12/x
3. Step 3: Cross multiply
   72,208.34x = 99,672.60 × 49,622.12
4. Step 4: Simplify right side
   72,208.34x = 4,945,965,717.91
5. Step 5: Solve for x
   x = 4,945,965,717.91/72,208.34
6. Step 6: Final answer
   x = 68,495.77