Finding the Fourth Proportional to 102,015.37, 140,632.83 and 71,293.08

Step by Step Solution

1. Step 1: Write the proportion equation
   102,015.37 : 140,632.83 = 71,293.08 : x
2. Step 2: Convert to fraction form
   102,015.37/140,632.83 = 71,293.08/x
3. Step 3: Cross multiply
   102,015.37x = 140,632.83 × 71,293.08
4. Step 4: Simplify right side
   102,015.37x = 10,026,147,599.82
5. Step 5: Solve for x
   x = 10,026,147,599.82/102,015.37
6. Step 6: Final answer
   x = 98,280.76