Finding the Fourth Proportional to 72,150.32, 108,225.46 and 19,559.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,150.32 : 108,225.46 = 19,559.80 : x
2. Step 2: Convert to fraction form
   72,150.32/108,225.46 = 19,559.80/x
3. Step 3: Cross multiply
   72,150.32x = 108,225.46 × 19,559.80
4. Step 4: Simplify right side
   72,150.32x = 2,116,868,352.51
5. Step 5: Solve for x
   x = 2,116,868,352.51/72,150.32
6. Step 6: Final answer
   x = 29,339.69