Finding the Fourth Proportional to 139,573.07, 209,192.82 and 50,722.55

Step by Step Solution

1. Step 1: Write the proportion equation
   139,573.07 : 209,192.82 = 50,722.55 : x
2. Step 2: Convert to fraction form
   139,573.07/209,192.82 = 50,722.55/x
3. Step 3: Cross multiply
   139,573.07x = 209,192.82 × 50,722.55
4. Step 4: Simplify right side
   139,573.07x = 10,610,793,272.09
5. Step 5: Solve for x
   x = 10,610,793,272.09/139,573.07
6. Step 6: Final answer
   x = 76,023.21