Finding the Fourth Proportional to 72,008.91, 99,372.15 and 40,175.91

Step by Step Solution

1. Step 1: Write the proportion equation
   72,008.91 : 99,372.15 = 40,175.91 : x
2. Step 2: Convert to fraction form
   72,008.91/99,372.15 = 40,175.91/x
3. Step 3: Cross multiply
   72,008.91x = 99,372.15 × 40,175.91
4. Step 4: Simplify right side
   72,008.91x = 3,992,366,554.91
5. Step 5: Solve for x
   x = 3,992,366,554.91/72,008.91
6. Step 6: Final answer
   x = 55,442.67