Finding the Fourth Proportional to 72,433.50, 99,958.59 and 42,239.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,433.50 : 99,958.59 = 42,239.76 : x
2. Step 2: Convert to fraction form
   72,433.50/99,958.59 = 42,239.76/x
3. Step 3: Cross multiply
   72,433.50x = 99,958.59 × 42,239.76
4. Step 4: Simplify right side
   72,433.50x = 4,222,226,851.54
5. Step 5: Solve for x
   x = 4,222,226,851.54/72,433.50
6. Step 6: Final answer
   x = 58,291.08