Finding the Fourth Proportional to 72,862.83, 109,294.43 and 20,272.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,862.83 : 109,294.43 = 20,272.32 : x
2. Step 2: Convert to fraction form
   72,862.83/109,294.43 = 20,272.32/x
3. Step 3: Cross multiply
   72,862.83x = 109,294.43 × 20,272.32
4. Step 4: Simplify right side
   72,862.83x = 2,215,651,557.82
5. Step 5: Solve for x
   x = 2,215,651,557.82/72,862.83
6. Step 6: Final answer
   x = 30,408.53