Finding the Fourth Proportional to 139,231.93, 208,871.47 and 48,022.57

Step by Step Solution

1. Step 1: Write the proportion equation
   139,231.93 : 208,871.47 = 48,022.57 : x
2. Step 2: Convert to fraction form
   139,231.93/208,871.47 = 48,022.57/x
3. Step 3: Cross multiply
   139,231.93x = 208,871.47 × 48,022.57
4. Step 4: Simplify right side
   139,231.93x = 10,030,544,789.08
5. Step 5: Solve for x
   x = 10,030,544,789.08/139,231.93
6. Step 6: Final answer
   x = 72,041.99