Finding the Fourth Proportional to 72,399.06, 108,584.01 and 19,813.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,399.06 : 108,584.01 = 19,813.86 : x
2. Step 2: Convert to fraction form
   72,399.06/108,584.01 = 19,813.86/x
3. Step 3: Cross multiply
   72,399.06x = 108,584.01 × 19,813.86
4. Step 4: Simplify right side
   72,399.06x = 2,151,468,372.38
5. Step 5: Solve for x
   x = 2,151,468,372.38/72,399.06
6. Step 6: Final answer
   x = 29,716.80