Finding the Fourth Proportional to 139,283.64, 208,956.89 and 50,537.00

Step by Step Solution

1. Step 1: Write the proportion equation
   139,283.64 : 208,956.89 = 50,537.00 : x
2. Step 2: Convert to fraction form
   139,283.64/208,956.89 = 50,537.00/x
3. Step 3: Cross multiply
   139,283.64x = 208,956.89 × 50,537.00
4. Step 4: Simplify right side
   139,283.64x = 10,560,053,052.46
5. Step 5: Solve for x
   x = 10,560,053,052.46/139,283.64
6. Step 6: Final answer
   x = 75,816.89