Finding the Fourth Proportional to 139,441.72, 209,164.74 and 44,689.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,441.72 : 209,164.74 = 44,689.72 : x
2. Step 2: Convert to fraction form
   139,441.72/209,164.74 = 44,689.72/x
3. Step 3: Cross multiply
   139,441.72x = 209,164.74 × 44,689.72
4. Step 4: Simplify right side
   139,441.72x = 9,347,513,664.47
5. Step 5: Solve for x
   x = 9,347,513,664.47/139,441.72
6. Step 6: Final answer
   x = 67,035.27