Finding the Fourth Proportional to 325,695.07, 488,542.81 and 89,019.96

Step by Step Solution

1. Step 1: Write the proportion equation
   325,695.07 : 488,542.81 = 89,019.96 : x
2. Step 2: Convert to fraction form
   325,695.07/488,542.81 = 89,019.96/x
3. Step 3: Cross multiply
   325,695.07x = 488,542.81 × 89,019.96
4. Step 4: Simplify right side
   325,695.07x = 43,490,061,404.49
5. Step 5: Solve for x
   x = 43,490,061,404.49/325,695.07
6. Step 6: Final answer
   x = 133,530.00