Finding the Fourth Proportional to 124,983.65, 172,298.02 and 89,111.39

Step by Step Solution

1. Step 1: Write the proportion equation
   124,983.65 : 172,298.02 = 89,111.39 : x
2. Step 2: Convert to fraction form
   124,983.65/172,298.02 = 89,111.39/x
3. Step 3: Cross multiply
   124,983.65x = 172,298.02 × 89,111.39
4. Step 4: Simplify right side
   124,983.65x = 15,353,714,749.40
5. Step 5: Solve for x
   x = 15,353,714,749.40/124,983.65
6. Step 6: Final answer
   x = 122,845.79