Finding the Fourth Proportional to 89,585.28, 123,602.04 and 57,772.44

Step by Step Solution

1. Step 1: Write the proportion equation
   89,585.28 : 123,602.04 = 57,772.44 : x
2. Step 2: Convert to fraction form
   89,585.28/123,602.04 = 57,772.44/x
3. Step 3: Cross multiply
   89,585.28x = 123,602.04 × 57,772.44
4. Step 4: Simplify right side
   89,585.28x = 7,140,791,439.78
5. Step 5: Solve for x
   x = 7,140,791,439.78/89,585.28
6. Step 6: Final answer
   x = 79,709.43