Finding the Fourth Proportional to 72,142.06, 108,219.22 and 18,841.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,142.06 : 108,219.22 = 18,841.10 : x
2. Step 2: Convert to fraction form
   72,142.06/108,219.22 = 18,841.10/x
3. Step 3: Cross multiply
   72,142.06x = 108,219.22 × 18,841.10
4. Step 4: Simplify right side
   72,142.06x = 2,038,969,145.94
5. Step 5: Solve for x
   x = 2,038,969,145.94/72,142.06
6. Step 6: Final answer
   x = 28,263.25