Finding the Fourth Proportional to 101,120.82, 139,544.40 and 55,803.06

Step by Step Solution

1. Step 1: Write the proportion equation
   101,120.82 : 139,544.40 = 55,803.06 : x
2. Step 2: Convert to fraction form
   101,120.82/139,544.40 = 55,803.06/x
3. Step 3: Cross multiply
   101,120.82x = 139,544.40 × 55,803.06
4. Step 4: Simplify right side
   101,120.82x = 7,787,004,525.86
5. Step 5: Solve for x
   x = 7,787,004,525.86/101,120.82
6. Step 6: Final answer
   x = 77,006.94