Finding the Fourth Proportional to 72,495.10, 99,997.17 and 52,381.51

Step by Step Solution

1. Step 1: Write the proportion equation
   72,495.10 : 99,997.17 = 52,381.51 : x
2. Step 2: Convert to fraction form
   72,495.10/99,997.17 = 52,381.51/x
3. Step 3: Cross multiply
   72,495.10x = 99,997.17 × 52,381.51
4. Step 4: Simplify right side
   72,495.10x = 5,238,002,760.33
5. Step 5: Solve for x
   x = 5,238,002,760.33/72,495.10
6. Step 6: Final answer
   x = 72,253.20