Finding the Fourth Proportional to 101,384.28, 139,844.43 and 65,028.18

Step by Step Solution

1. Step 1: Write the proportion equation
   101,384.28 : 139,844.43 = 65,028.18 : x
2. Step 2: Convert to fraction form
   101,384.28/139,844.43 = 65,028.18/x
3. Step 3: Cross multiply
   101,384.28x = 139,844.43 × 65,028.18
4. Step 4: Simplify right side
   101,384.28x = 9,093,828,766.04
5. Step 5: Solve for x
   x = 9,093,828,766.04/101,384.28
6. Step 6: Final answer
   x = 89,696.64