Finding the Fourth Proportional to 102,989.25, 142,127.33 and 58,277.25

Step by Step Solution

1. Step 1: Write the proportion equation
   102,989.25 : 142,127.33 = 58,277.25 : x
2. Step 2: Convert to fraction form
   102,989.25/142,127.33 = 58,277.25/x
3. Step 3: Cross multiply
   102,989.25x = 142,127.33 × 58,277.25
4. Step 4: Simplify right side
   102,989.25x = 8,282,789,650.86
5. Step 5: Solve for x
   x = 8,282,789,650.86/102,989.25
6. Step 6: Final answer
   x = 80,423.83