Finding the Fourth Proportional to 123,433.27, 170,336.52 and 72,436.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,433.27 : 170,336.52 = 72,436.88 : x
2. Step 2: Convert to fraction form
   123,433.27/170,336.52 = 72,436.88/x
3. Step 3: Cross multiply
   123,433.27x = 170,336.52 × 72,436.88
4. Step 4: Simplify right side
   123,433.27x = 12,338,646,484.70
5. Step 5: Solve for x
   x = 12,338,646,484.70/123,433.27
6. Step 6: Final answer
   x = 99,962.08