Finding the Fourth Proportional to 123,672.32, 170,538.72 and 73,361.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,672.32 : 170,538.72 = 73,361.60 : x
2. Step 2: Convert to fraction form
   123,672.32/170,538.72 = 73,361.60/x
3. Step 3: Cross multiply
   123,672.32x = 170,538.72 × 73,361.60
4. Step 4: Simplify right side
   123,672.32x = 12,510,993,361.15
5. Step 5: Solve for x
   x = 12,510,993,361.15/123,672.32
6. Step 6: Final answer
   x = 101,162.44