Finding the Fourth Proportional to 89,130.96, 123,056.64 and 57,355.08

Step by Step Solution

1. Step 1: Write the proportion equation
   89,130.96 : 123,056.64 = 57,355.08 : x
2. Step 2: Convert to fraction form
   89,130.96/123,056.64 = 57,355.08/x
3. Step 3: Cross multiply
   89,130.96x = 123,056.64 × 57,355.08
4. Step 4: Simplify right side
   89,130.96x = 7,057,923,431.73
5. Step 5: Solve for x
   x = 7,057,923,431.73/89,130.96
6. Step 6: Final answer
   x = 79,185.99