Finding the Fourth Proportional to 139,300.29, 208,950.03 and 50,553.45

Step by Step Solution

1. Step 1: Write the proportion equation
   139,300.29 : 208,950.03 = 50,553.45 : x
2. Step 2: Convert to fraction form
   139,300.29/208,950.03 = 50,553.45/x
3. Step 3: Cross multiply
   139,300.29x = 208,950.03 × 50,553.45
4. Step 4: Simplify right side
   139,300.29x = 10,563,144,894.10
5. Step 5: Solve for x
   x = 10,563,144,894.10/139,300.29
6. Step 6: Final answer
   x = 75,830.03