Finding the Fourth Proportional to 72,179.28, 99,607.52 and 40,348.14

Step by Step Solution

1. Step 1: Write the proportion equation
   72,179.28 : 99,607.52 = 40,348.14 : x
2. Step 2: Convert to fraction form
   72,179.28/99,607.52 = 40,348.14/x
3. Step 3: Cross multiply
   72,179.28x = 99,607.52 × 40,348.14
4. Step 4: Simplify right side
   72,179.28x = 4,018,978,162.01
5. Step 5: Solve for x
   x = 4,018,978,162.01/72,179.28
6. Step 6: Final answer
   x = 55,680.50