Finding the Fourth Proportional to 102,019.54, 140,807.78 and 69,843.14

Step by Step Solution

1. Step 1: Write the proportion equation
   102,019.54 : 140,807.78 = 69,843.14 : x
2. Step 2: Convert to fraction form
   102,019.54/140,807.78 = 69,843.14/x
3. Step 3: Cross multiply
   102,019.54x = 140,807.78 × 69,843.14
4. Step 4: Simplify right side
   102,019.54x = 9,834,456,930.51
5. Step 5: Solve for x
   x = 9,834,456,930.51/102,019.54
6. Step 6: Final answer
   x = 96,397.78