Finding the Fourth Proportional to 123,815.79, 185,724.50 and 30,321.54

Step by Step Solution

1. Step 1: Write the proportion equation
   123,815.79 : 185,724.50 = 30,321.54 : x
2. Step 2: Convert to fraction form
   123,815.79/185,724.50 = 30,321.54/x
3. Step 3: Cross multiply
   123,815.79x = 185,724.50 × 30,321.54
4. Step 4: Simplify right side
   123,815.79x = 5,631,452,704.12
5. Step 5: Solve for x
   x = 5,631,452,704.12/123,815.79
6. Step 6: Final answer
   x = 45,482.51