Finding the Fourth Proportional to 139,080.04, 208,527.89 and 50,321.99

Step by Step Solution

1. Step 1: Write the proportion equation
   139,080.04 : 208,527.89 = 50,321.99 : x
2. Step 2: Convert to fraction form
   139,080.04/208,527.89 = 50,321.99/x
3. Step 3: Cross multiply
   139,080.04x = 208,527.89 × 50,321.99
4. Step 4: Simplify right side
   139,080.04x = 10,493,538,665.01
5. Step 5: Solve for x
   x = 10,493,538,665.01/139,080.04
6. Step 6: Final answer
   x = 75,449.64