Finding the Fourth Proportional to 71,799, 99,048.60 and 50,589.96

Step by Step Solution

1. Step 1: Write the proportion equation
   71,799 : 99,048.60 = 50,589.96 : x
2. Step 2: Convert to fraction form
   71,799/99,048.60 = 50,589.96/x
3. Step 3: Cross multiply
   71,799x = 99,048.60 × 50,589.96
4. Step 4: Simplify right side
   71,799x = 5,010,864,712.06
5. Step 5: Solve for x
   x = 5,010,864,712.06/71,799
6. Step 6: Final answer
   x = 69,790.17