Finding the Fourth Proportional to 89,549.06, 123,660.69 and 57,772.58

Step by Step Solution

1. Step 1: Write the proportion equation
   89,549.06 : 123,660.69 = 57,772.58 : x
2. Step 2: Convert to fraction form
   89,549.06/123,660.69 = 57,772.58/x
3. Step 3: Cross multiply
   89,549.06x = 123,660.69 × 57,772.58
4. Step 4: Simplify right side
   89,549.06x = 7,144,197,105.88
5. Step 5: Solve for x
   x = 7,144,197,105.88/89,549.06
6. Step 6: Final answer
   x = 79,779.70