Finding the Fourth Proportional to 101,105.29, 139,524.42 and 55,783.68

Step by Step Solution

1. Step 1: Write the proportion equation
   101,105.29 : 139,524.42 = 55,783.68 : x
2. Step 2: Convert to fraction form
   101,105.29/139,524.42 = 55,783.68/x
3. Step 3: Cross multiply
   101,105.29x = 139,524.42 × 55,783.68
4. Step 4: Simplify right side
   101,105.29x = 7,783,185,597.47
5. Step 5: Solve for x
   x = 7,783,185,597.47/101,105.29
6. Step 6: Final answer
   x = 76,980.99