Finding the Fourth Proportional to 72,525.30, 108,701.55 and 30,405.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,525.30 : 108,701.55 = 30,405.30 : x
2. Step 2: Convert to fraction form
   72,525.30/108,701.55 = 30,405.30/x
3. Step 3: Cross multiply
   72,525.30x = 108,701.55 × 30,405.30
4. Step 4: Simplify right side
   72,525.30x = 3,305,103,238.22
5. Step 5: Solve for x
   x = 3,305,103,238.22/72,525.30
6. Step 6: Final answer
   x = 45,571.73