Finding the Fourth Proportional to 72,078.53, 108,117.53 and 19,488

Step by Step Solution

1. Step 1: Write the proportion equation
   72,078.53 : 108,117.53 = 19,488 : x
2. Step 2: Convert to fraction form
   72,078.53/108,117.53 = 19,488/x
3. Step 3: Cross multiply
   72,078.53x = 108,117.53 × 19,488
4. Step 4: Simplify right side
   72,078.53x = 2,106,994,327.20
5. Step 5: Solve for x
   x = 2,106,994,327.20/72,078.53
6. Step 6: Final answer
   x = 29,231.93