Finding the Fourth Proportional to 72,017.10, 99,373.77 and 40,181.94

Step by Step Solution

1. Step 1: Write the proportion equation
   72,017.10 : 99,373.77 = 40,181.94 : x
2. Step 2: Convert to fraction form
   72,017.10/99,373.77 = 40,181.94/x
3. Step 3: Cross multiply
   72,017.10x = 99,373.77 × 40,181.94
4. Step 4: Simplify right side
   72,017.10x = 3,993,030,863.71
5. Step 5: Solve for x
   x = 3,993,030,863.71/72,017.10
6. Step 6: Final answer
   x = 55,445.59