Finding the Fourth Proportional to 115,015.74, 172,558.89 and 58,895.28

Step by Step Solution

1. Step 1: Write the proportion equation
   115,015.74 : 172,558.89 = 58,895.28 : x
2. Step 2: Convert to fraction form
   115,015.74/172,558.89 = 58,895.28/x
3. Step 3: Cross multiply
   115,015.74x = 172,558.89 × 58,895.28
4. Step 4: Simplify right side
   115,015.74x = 10,162,904,143.04
5. Step 5: Solve for x
   x = 10,162,904,143.04/115,015.74
6. Step 6: Final answer
   x = 88,360.99