Finding the Fourth Proportional to 123,327.58, 170,173.82 and 72,321.07

Step by Step Solution

1. Step 1: Write the proportion equation
   123,327.58 : 170,173.82 = 72,321.07 : x
2. Step 2: Convert to fraction form
   123,327.58/170,173.82 = 72,321.07/x
3. Step 3: Cross multiply
   123,327.58x = 170,173.82 × 72,321.07
4. Step 4: Simplify right side
   123,327.58x = 12,307,151,535.91
5. Step 5: Solve for x
   x = 12,307,151,535.91/123,327.58
6. Step 6: Final answer
   x = 99,792.37