Finding the Fourth Proportional to 123,233.12, 170,105.30 and 72,932

Step by Step Solution

1. Step 1: Write the proportion equation
   123,233.12 : 170,105.30 = 72,932 : x
2. Step 2: Convert to fraction form
   123,233.12/170,105.30 = 72,932/x
3. Step 3: Cross multiply
   123,233.12x = 170,105.30 × 72,932
4. Step 4: Simplify right side
   123,233.12x = 12,406,119,739.60
5. Step 5: Solve for x
   x = 12,406,119,739.60/123,233.12
6. Step 6: Final answer
   x = 100,671.96