Finding the Fourth Proportional to 72,298.16, 99,770.42 and 40,029.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72,298.16 : 99,770.42 = 40,029.69 : x
2. Step 2: Convert to fraction form
   72,298.16/99,770.42 = 40,029.69/x
3. Step 3: Cross multiply
   72,298.16x = 99,770.42 × 40,029.69
4. Step 4: Simplify right side
   72,298.16x = 3,993,779,083.84
5. Step 5: Solve for x
   x = 3,993,779,083.84/72,298.16
6. Step 6: Final answer
   x = 55,240.40