Finding the Fourth Proportional to 123,093.80, 169,868.58 and 72,791.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,093.80 : 169,868.58 = 72,791.72 : x
2. Step 2: Convert to fraction form
   123,093.80/169,868.58 = 72,791.72/x
3. Step 3: Cross multiply
   123,093.80x = 169,868.58 × 72,791.72
4. Step 4: Simplify right side
   123,093.80x = 12,365,026,112.16
5. Step 5: Solve for x
   x = 12,365,026,112.16/123,093.80
6. Step 6: Final answer
   x = 100,452.06