Finding the Fourth Proportional to 89,316.78, 133,987.45 and 33,152.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,316.78 : 133,987.45 = 33,152.12 : x
2. Step 2: Convert to fraction form
   89,316.78/133,987.45 = 33,152.12/x
3. Step 3: Cross multiply
   89,316.78x = 133,987.45 × 33,152.12
4. Step 4: Simplify right side
   89,316.78x = 4,441,968,020.89
5. Step 5: Solve for x
   x = 4,441,968,020.89/89,316.78
6. Step 6: Final answer
   x = 49,732.74