Finding the Fourth Proportional to 123,063.92, 169,870.40 and 72,093

Step by Step Solution

1. Step 1: Write the proportion equation
   123,063.92 : 169,870.40 = 72,093 : x
2. Step 2: Convert to fraction form
   123,063.92/169,870.40 = 72,093/x
3. Step 3: Cross multiply
   123,063.92x = 169,870.40 × 72,093
4. Step 4: Simplify right side
   123,063.92x = 12,246,466,747.20
5. Step 5: Solve for x
   x = 12,246,466,747.20/123,063.92
6. Step 6: Final answer
   x = 99,513.06