Finding the Fourth Proportional to 139,011.10, 208,516.67 and 33,830.07

Step by Step Solution

1. Step 1: Write the proportion equation
   139,011.10 : 208,516.67 = 33,830.07 : x
2. Step 2: Convert to fraction form
   139,011.10/208,516.67 = 33,830.07/x
3. Step 3: Cross multiply
   139,011.10x = 208,516.67 × 33,830.07
4. Step 4: Simplify right side
   139,011.10x = 7,054,132,963.69
5. Step 5: Solve for x
   x = 7,054,132,963.69/139,011.10
6. Step 6: Final answer
   x = 50,745.11