Finding the Fourth Proportional to 139,416.76, 209,142.96 and 50,712.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,416.76 : 209,142.96 = 50,712.04 : x
2. Step 2: Convert to fraction form
   139,416.76/209,142.96 = 50,712.04/x
3. Step 3: Cross multiply
   139,416.76x = 209,142.96 × 50,712.04
4. Step 4: Simplify right side
   139,416.76x = 10,606,066,153.24
5. Step 5: Solve for x
   x = 10,606,066,153.24/139,416.76
6. Step 6: Final answer
   x = 76,074.54