Finding the Fourth Proportional to 89,696.96, 123,727.82 and 57,438.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,696.96 : 123,727.82 = 57,438.56 : x
2. Step 2: Convert to fraction form
   89,696.96/123,727.82 = 57,438.56/x
3. Step 3: Cross multiply
   89,696.96x = 123,727.82 × 57,438.56
4. Step 4: Simplify right side
   89,696.96x = 7,106,747,812.74
5. Step 5: Solve for x
   x = 7,106,747,812.74/89,696.96
6. Step 6: Final answer
   x = 79,230.64