Finding the Fourth Proportional to 72,025.72, 99,383.62 and 40,194.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,025.72 : 99,383.62 = 40,194.56 : x
2. Step 2: Convert to fraction form
   72,025.72/99,383.62 = 40,194.56/x
3. Step 3: Cross multiply
   72,025.72x = 99,383.62 × 40,194.56
4. Step 4: Simplify right side
   72,025.72x = 3,994,680,877.11
5. Step 5: Solve for x
   x = 3,994,680,877.11/72,025.72
6. Step 6: Final answer
   x = 55,461.87