Finding the Fourth Proportional to 139,048.26, 208,588.59 and 50,343.54

Step by Step Solution

1. Step 1: Write the proportion equation
   139,048.26 : 208,588.59 = 50,343.54 : x
2. Step 2: Convert to fraction form
   139,048.26/208,588.59 = 50,343.54/x
3. Step 3: Cross multiply
   139,048.26x = 208,588.59 × 50,343.54
4. Step 4: Simplify right side
   139,048.26x = 10,501,088,024.21
5. Step 5: Solve for x
   x = 10,501,088,024.21/139,048.26
6. Step 6: Final answer
   x = 75,521.18