Finding the Fourth Proportional to 157,005.33, 216,662.73 and 89,028.51

Step by Step Solution

1. Step 1: Write the proportion equation
   157,005.33 : 216,662.73 = 89,028.51 : x
2. Step 2: Convert to fraction form
   157,005.33/216,662.73 = 89,028.51/x
3. Step 3: Cross multiply
   157,005.33x = 216,662.73 × 89,028.51
4. Step 4: Simplify right side
   157,005.33x = 19,289,160,024.43
5. Step 5: Solve for x
   x = 19,289,160,024.43/157,005.33
6. Step 6: Final answer
   x = 122,856.72