Finding the Fourth Proportional to 89,991.32, 134,884.56 and 39,996.32

Step by Step Solution

1. Step 1: Write the proportion equation
   89,991.32 : 134,884.56 = 39,996.32 : x
2. Step 2: Convert to fraction form
   89,991.32/134,884.56 = 39,996.32/x
3. Step 3: Cross multiply
   89,991.32x = 134,884.56 × 39,996.32
4. Step 4: Simplify right side
   89,991.32x = 5,394,886,024.82
5. Step 5: Solve for x
   x = 5,394,886,024.82/89,991.32
6. Step 6: Final answer
   x = 59,948.96