Finding the Fourth Proportional to 89,105.51, 133,639.40 and 53,097.91

Step by Step Solution

1. Step 1: Write the proportion equation
   89,105.51 : 133,639.40 = 53,097.91 : x
2. Step 2: Convert to fraction form
   89,105.51/133,639.40 = 53,097.91/x
3. Step 3: Cross multiply
   89,105.51x = 133,639.40 × 53,097.91
4. Step 4: Simplify right side
   89,105.51x = 7,095,972,632.30
5. Step 5: Solve for x
   x = 7,095,972,632.30/89,105.51
6. Step 6: Final answer
   x = 79,635.62