Finding the Fourth Proportional to 89,992.04, 134,988.72 and 30,828.20

Step by Step Solution

1. Step 1: Write the proportion equation
   89,992.04 : 134,988.72 = 30,828.20 : x
2. Step 2: Convert to fraction form
   89,992.04/134,988.72 = 30,828.20/x
3. Step 3: Cross multiply
   89,992.04x = 134,988.72 × 30,828.20
4. Step 4: Simplify right side
   89,992.04x = 4,161,459,257.90
5. Step 5: Solve for x
   x = 4,161,459,257.90/89,992.04
6. Step 6: Final answer
   x = 46,242.53