Finding the Fourth Proportional to 52,211.77, 72,019.47 and 30,976

Step by Step Solution

1. Step 1: Write the proportion equation
   52,211.77 : 72,019.47 = 30,976 : x
2. Step 2: Convert to fraction form
   52,211.77/72,019.47 = 30,976/x
3. Step 3: Cross multiply
   52,211.77x = 72,019.47 × 30,976
4. Step 4: Simplify right side
   52,211.77x = 2,230,875,102.72
5. Step 5: Solve for x
   x = 2,230,875,102.72/52,211.77
6. Step 6: Final answer
   x = 42,727.44