Finding the Fourth Proportional to 139,271.91, 208,778.86 and 50,501.58

Step by Step Solution

1. Step 1: Write the proportion equation
   139,271.91 : 208,778.86 = 50,501.58 : x
2. Step 2: Convert to fraction form
   139,271.91/208,778.86 = 50,501.58/x
3. Step 3: Cross multiply
   139,271.91x = 208,778.86 × 50,501.58
4. Step 4: Simplify right side
   139,271.91x = 10,543,662,300.60
5. Step 5: Solve for x
   x = 10,543,662,300.60/139,271.91
6. Step 6: Final answer
   x = 75,705.59