Finding the Fourth Proportional to 72,451.45, 99,969.15 and 43,765.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,451.45 : 99,969.15 = 43,765.30 : x
2. Step 2: Convert to fraction form
   72,451.45/99,969.15 = 43,765.30/x
3. Step 3: Cross multiply
   72,451.45x = 99,969.15 × 43,765.30
4. Step 4: Simplify right side
   72,451.45x = 4,375,179,840.50
5. Step 5: Solve for x
   x = 4,375,179,840.50/72,451.45
6. Step 6: Final answer
   x = 60,387.75