Finding the Fourth Proportional to 139,551.72, 209,327.76 and 50,805.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,551.72 : 209,327.76 = 50,805.96 : x
2. Step 2: Convert to fraction form
   139,551.72/209,327.76 = 50,805.96/x
3. Step 3: Cross multiply
   139,551.72x = 209,327.76 × 50,805.96
4. Step 4: Simplify right side
   139,551.72x = 10,635,097,801.45
5. Step 5: Solve for x
   x = 10,635,097,801.45/139,551.72
6. Step 6: Final answer
   x = 76,209.01