Finding the Fourth Proportional to 72,447.42, 99,977.61 and 40,184.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72,447.42 : 99,977.61 = 40,184.31 : x
2. Step 2: Convert to fraction form
   72,447.42/99,977.61 = 40,184.31/x
3. Step 3: Cross multiply
   72,447.42x = 99,977.61 × 40,184.31
4. Step 4: Simplify right side
   72,447.42x = 4,017,531,273.30
5. Step 5: Solve for x
   x = 4,017,531,273.30/72,447.42
6. Step 6: Final answer
   x = 55,454.44