Finding the Fourth Proportional to 89,530.01, 123,529.05 and 57,660.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,530.01 : 123,529.05 = 57,660.56 : x
2. Step 2: Convert to fraction form
   89,530.01/123,529.05 = 57,660.56/x
3. Step 3: Cross multiply
   89,530.01x = 123,529.05 × 57,660.56
4. Step 4: Simplify right side
   89,530.01x = 7,122,754,199.27
5. Step 5: Solve for x
   x = 7,122,754,199.27/89,530.01
6. Step 6: Final answer
   x = 79,557.17