Finding the Fourth Proportional to 89,162.96, 133,746.36 and 42,420.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,162.96 : 133,746.36 = 42,420.56 : x
2. Step 2: Convert to fraction form
   89,162.96/133,746.36 = 42,420.56/x
3. Step 3: Cross multiply
   89,162.96x = 133,746.36 × 42,420.56
4. Step 4: Simplify right side
   89,162.96x = 5,673,595,489.16
5. Step 5: Solve for x
   x = 5,673,595,489.16/89,162.96
6. Step 6: Final answer
   x = 63,631.75