Finding the Fourth Proportional to 72,077.56, 99,456.60 and 43,777.78

Step by Step Solution

1. Step 1: Write the proportion equation
   72,077.56 : 99,456.60 = 43,777.78 : x
2. Step 2: Convert to fraction form
   72,077.56/99,456.60 = 43,777.78/x
3. Step 3: Cross multiply
   72,077.56x = 99,456.60 × 43,777.78
4. Step 4: Simplify right side
   72,077.56x = 4,353,989,154.35
5. Step 5: Solve for x
   x = 4,353,989,154.35/72,077.56
6. Step 6: Final answer
   x = 60,407.00