Finding the Fourth Proportional to 78,574.56, 108,453.30 and 49,908

Step by Step Solution

1. Step 1: Write the proportion equation
   78,574.56 : 108,453.30 = 49,908 : x
2. Step 2: Convert to fraction form
   78,574.56/108,453.30 = 49,908/x
3. Step 3: Cross multiply
   78,574.56x = 108,453.30 × 49,908
4. Step 4: Simplify right side
   78,574.56x = 5,412,687,296.40
5. Step 5: Solve for x
   x = 5,412,687,296.40/78,574.56
6. Step 6: Final answer
   x = 68,886.00