Finding the Fourth Proportional to 157,443.91, 217,264.41 and 89,451.47

Step by Step Solution

1. Step 1: Write the proportion equation
   157,443.91 : 217,264.41 = 89,451.47 : x
2. Step 2: Convert to fraction form
   157,443.91/217,264.41 = 89,451.47/x
3. Step 3: Cross multiply
   157,443.91x = 217,264.41 × 89,451.47
4. Step 4: Simplify right side
   157,443.91x = 19,434,621,396.34
5. Step 5: Solve for x
   x = 19,434,621,396.34/157,443.91
6. Step 6: Final answer
   x = 123,438.38