Finding the Fourth Proportional to 123,081.73, 169,909.44 and 72,087.37

Step by Step Solution

1. Step 1: Write the proportion equation
   123,081.73 : 169,909.44 = 72,087.37 : x
2. Step 2: Convert to fraction form
   123,081.73/169,909.44 = 72,087.37/x
3. Step 3: Cross multiply
   123,081.73x = 169,909.44 × 72,087.37
4. Step 4: Simplify right side
   123,081.73x = 12,248,323,818.23
5. Step 5: Solve for x
   x = 12,248,323,818.23/123,081.73
6. Step 6: Final answer
   x = 99,513.75