Finding the Fourth Proportional to 143,088.54, 197,462.96 and 89,404.71

Step by Step Solution

1. Step 1: Write the proportion equation
   143,088.54 : 197,462.96 = 89,404.71 : x
2. Step 2: Convert to fraction form
   143,088.54/197,462.96 = 89,404.71/x
3. Step 3: Cross multiply
   143,088.54x = 197,462.96 × 89,404.71
4. Step 4: Simplify right side
   143,088.54x = 17,654,118,227.52
5. Step 5: Solve for x
   x = 17,654,118,227.52/143,088.54
6. Step 6: Final answer
   x = 123,378.98