Finding the Fourth Proportional to 101,105.28, 139,525.74 and 55,784.58

Step by Step Solution

1. Step 1: Write the proportion equation
   101,105.28 : 139,525.74 = 55,784.58 : x
2. Step 2: Convert to fraction form
   101,105.28/139,525.74 = 55,784.58/x
3. Step 3: Cross multiply
   101,105.28x = 139,525.74 × 55,784.58
4. Step 4: Simplify right side
   101,105.28x = 7,783,384,805.09
5. Step 5: Solve for x
   x = 7,783,384,805.09/101,105.28
6. Step 6: Final answer
   x = 76,982.97