Finding the Fourth Proportional to 72,222.38, 99,671.98 and 40,394.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,222.38 : 99,671.98 = 40,394.24 : x
2. Step 2: Convert to fraction form
   72,222.38/99,671.98 = 40,394.24/x
3. Step 3: Cross multiply
   72,222.38x = 99,671.98 × 40,394.24
4. Step 4: Simplify right side
   72,222.38x = 4,026,173,881.40
5. Step 5: Solve for x
   x = 4,026,173,881.40/72,222.38
6. Step 6: Final answer
   x = 55,746.90