Finding the Fourth Proportional to 72,455.57, 99,964.79 and 43,764.51

Step by Step Solution

1. Step 1: Write the proportion equation
   72,455.57 : 99,964.79 = 43,764.51 : x
2. Step 2: Convert to fraction form
   72,455.57/99,964.79 = 43,764.51/x
3. Step 3: Cross multiply
   72,455.57x = 99,964.79 × 43,764.51
4. Step 4: Simplify right side
   72,455.57x = 4,374,909,832.78
5. Step 5: Solve for x
   x = 4,374,909,832.78/72,455.57
6. Step 6: Final answer
   x = 60,380.59