Finding the Fourth Proportional to 72,740.35, 100,380.72 and 40,909.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,740.35 : 100,380.72 = 40,909.25 : x
2. Step 2: Convert to fraction form
   72,740.35/100,380.72 = 40,909.25/x
3. Step 3: Cross multiply
   72,740.35x = 100,380.72 × 40,909.25
4. Step 4: Simplify right side
   72,740.35x = 4,106,499,767.48
5. Step 5: Solve for x
   x = 4,106,499,767.48/72,740.35
6. Step 6: Final answer
   x = 56,454.22