Finding the Fourth Proportional to 172,171.16, 258,108.83 and 59,836.78

Step by Step Solution

1. Step 1: Write the proportion equation
   172,171.16 : 258,108.83 = 59,836.78 : x
2. Step 2: Convert to fraction form
   172,171.16/258,108.83 = 59,836.78/x
3. Step 3: Cross multiply
   172,171.16x = 258,108.83 × 59,836.78
4. Step 4: Simplify right side
   172,171.16x = 15,444,400,977.58
5. Step 5: Solve for x
   x = 15,444,400,977.58/172,171.16
6. Step 6: Final answer
   x = 89,703.77