Finding the Fourth Proportional to 72,161.86, 99,626.43 and 45,327.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,161.86 : 99,626.43 = 45,327.34 : x
2. Step 2: Convert to fraction form
   72,161.86/99,626.43 = 45,327.34/x
3. Step 3: Cross multiply
   72,161.86x = 99,626.43 × 45,327.34
4. Step 4: Simplify right side
   72,161.86x = 4,515,801,065.60
5. Step 5: Solve for x
   x = 4,515,801,065.60/72,161.86
6. Step 6: Final answer
   x = 62,578.78