Finding the Fourth Proportional to 102,146.51, 140,845.96 and 71,922.17

Step by Step Solution

1. Step 1: Write the proportion equation
   102,146.51 : 140,845.96 = 71,922.17 : x
2. Step 2: Convert to fraction form
   102,146.51/140,845.96 = 71,922.17/x
3. Step 3: Cross multiply
   102,146.51x = 140,845.96 × 71,922.17
4. Step 4: Simplify right side
   102,146.51x = 10,129,947,078.93
5. Step 5: Solve for x
   x = 10,129,947,078.93/102,146.51
6. Step 6: Final answer
   x = 99,170.76