Finding the Fourth Proportional to 172,165.31, 258,238.24 and 53,822.69

Step by Step Solution

1. Step 1: Write the proportion equation
   172,165.31 : 258,238.24 = 53,822.69 : x
2. Step 2: Convert to fraction form
   172,165.31/258,238.24 = 53,822.69/x
3. Step 3: Cross multiply
   172,165.31x = 258,238.24 × 53,822.69
4. Step 4: Simplify right side
   172,165.31x = 13,899,076,737.67
5. Step 5: Solve for x
   x = 13,899,076,737.67/172,165.31
6. Step 6: Final answer
   x = 80,730.99