Finding the Fourth Proportional to 101,299.37, 139,792.78 and 55,976.09

Step by Step Solution

1. Step 1: Write the proportion equation
   101,299.37 : 139,792.78 = 55,976.09 : x
2. Step 2: Convert to fraction form
   101,299.37/139,792.78 = 55,976.09/x
3. Step 3: Cross multiply
   101,299.37x = 139,792.78 × 55,976.09
4. Step 4: Simplify right side
   101,299.37x = 7,825,053,234.63
5. Step 5: Solve for x
   x = 7,825,053,234.63/101,299.37
6. Step 6: Final answer
   x = 77,246.81