Finding the Fourth Proportional to 172,289.30, 258,434.01 and 53,969.83

Step by Step Solution

1. Step 1: Write the proportion equation
   172,289.30 : 258,434.01 = 53,969.83 : x
2. Step 2: Convert to fraction form
   172,289.30/258,434.01 = 53,969.83/x
3. Step 3: Cross multiply
   172,289.30x = 258,434.01 × 53,969.83
4. Step 4: Simplify right side
   172,289.30x = 13,947,638,939.83
5. Step 5: Solve for x
   x = 13,947,638,939.83/172,289.30
6. Step 6: Final answer
   x = 80,954.76