Finding the Fourth Proportional to 72,922, 100,632.42 and 39,388

Step by Step Solution

1. Step 1: Write the proportion equation
   72,922 : 100,632.42 = 39,388 : x
2. Step 2: Convert to fraction form
   72,922/100,632.42 = 39,388/x
3. Step 3: Cross multiply
   72,922x = 100,632.42 × 39,388
4. Step 4: Simplify right side
   72,922x = 3,963,709,758.96
5. Step 5: Solve for x
   x = 3,963,709,758.96/72,922
6. Step 6: Final answer
   x = 54,355.47