Finding the Fourth Proportional to 89,116.34, 133,634.56 and 53,109.79

Step by Step Solution

1. Step 1: Write the proportion equation
   89,116.34 : 133,634.56 = 53,109.79 : x
2. Step 2: Convert to fraction form
   89,116.34/133,634.56 = 53,109.79/x
3. Step 3: Cross multiply
   89,116.34x = 133,634.56 × 53,109.79
4. Step 4: Simplify right side
   89,116.34x = 7,097,303,802.76
5. Step 5: Solve for x
   x = 7,097,303,802.76/89,116.34
6. Step 6: Final answer
   x = 79,640.89