Finding the Fourth Proportional to 123,087.96, 169,918.14 and 72,093.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,087.96 : 169,918.14 = 72,093.60 : x
2. Step 2: Convert to fraction form
   123,087.96/169,918.14 = 72,093.60/x
3. Step 3: Cross multiply
   123,087.96x = 169,918.14 × 72,093.60
4. Step 4: Simplify right side
   123,087.96x = 12,250,010,417.90
5. Step 5: Solve for x
   x = 12,250,010,417.90/123,087.96
6. Step 6: Final answer
   x = 99,522.41