Finding the Fourth Proportional to 72,209.32, 99,608.82 and 41,991.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,209.32 : 99,608.82 = 41,991.32 : x
2. Step 2: Convert to fraction form
   72,209.32/99,608.82 = 41,991.32/x
3. Step 3: Cross multiply
   72,209.32x = 99,608.82 × 41,991.32
4. Step 4: Simplify right side
   72,209.32x = 4,182,705,835.44
5. Step 5: Solve for x
   x = 4,182,705,835.44/72,209.32
6. Step 6: Final answer
   x = 57,924.74