Finding the Fourth Proportional to 157,007.29, 216,665.42 and 89,030.47

Step by Step Solution

1. Step 1: Write the proportion equation
   157,007.29 : 216,665.42 = 89,030.47 : x
2. Step 2: Convert to fraction form
   157,007.29/216,665.42 = 89,030.47/x
3. Step 3: Cross multiply
   157,007.29x = 216,665.42 × 89,030.47
4. Step 4: Simplify right side
   157,007.29x = 19,289,823,856.26
5. Step 5: Solve for x
   x = 19,289,823,856.26/157,007.29
6. Step 6: Final answer
   x = 122,859.42