Finding the Fourth Proportional to 101,041.63, 139,438.46 and 55,721.42

Step by Step Solution

1. Step 1: Write the proportion equation
   101,041.63 : 139,438.46 = 55,721.42 : x
2. Step 2: Convert to fraction form
   101,041.63/139,438.46 = 55,721.42/x
3. Step 3: Cross multiply
   101,041.63x = 139,438.46 × 55,721.42
4. Step 4: Simplify right side
   101,041.63x = 7,769,708,958.82
5. Step 5: Solve for x
   x = 7,769,708,958.82/101,041.63
6. Step 6: Final answer
   x = 76,896.12