Finding the Fourth Proportional to 139,283, 209,007.52 and 50,543.43

Step by Step Solution

1. Step 1: Write the proportion equation
   139,283 : 209,007.52 = 50,543.43 : x
2. Step 2: Convert to fraction form
   139,283/209,007.52 = 50,543.43/x
3. Step 3: Cross multiply
   139,283x = 209,007.52 × 50,543.43
4. Step 4: Simplify right side
   139,283x = 10,563,956,956.59
5. Step 5: Solve for x
   x = 10,563,956,956.59/139,283
6. Step 6: Final answer
   x = 75,845.27