Finding the Fourth Proportional to 101,285.10, 139,772.87 and 55,963.10

Step by Step Solution

1. Step 1: Write the proportion equation
   101,285.10 : 139,772.87 = 55,963.10 : x
2. Step 2: Convert to fraction form
   101,285.10/139,772.87 = 55,963.10/x
3. Step 3: Cross multiply
   101,285.10x = 139,772.87 × 55,963.10
4. Step 4: Simplify right side
   101,285.10x = 7,822,123,101.10
5. Step 5: Solve for x
   x = 7,822,123,101.10/101,285.10
6. Step 6: Final answer
   x = 77,228.76