Finding the Fourth Proportional to 101,045.50, 139,439.73 and 55,723.42

Step by Step Solution

1. Step 1: Write the proportion equation
   101,045.50 : 139,439.73 = 55,723.42 : x
2. Step 2: Convert to fraction form
   101,045.50/139,439.73 = 55,723.42/x
3. Step 3: Cross multiply
   101,045.50x = 139,439.73 × 55,723.42
4. Step 4: Simplify right side
   101,045.50x = 7,770,058,639.48
5. Step 5: Solve for x
   x = 7,770,058,639.48/101,045.50
6. Step 6: Final answer
   x = 76,896.63