Finding the Fourth Proportional to 72,621.96, 108,919.98 and 19,314.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,621.96 : 108,919.98 = 19,314.24 : x
2. Step 2: Convert to fraction form
   72,621.96/108,919.98 = 19,314.24/x
3. Step 3: Cross multiply
   72,621.96x = 108,919.98 × 19,314.24
4. Step 4: Simplify right side
   72,621.96x = 2,103,706,634.52
5. Step 5: Solve for x
   x = 2,103,706,634.52/72,621.96
6. Step 6: Final answer
   x = 28,967.91