Finding the Fourth Proportional to 89,301.28, 123,170.79 and 59,112.46

Step by Step Solution

1. Step 1: Write the proportion equation
   89,301.28 : 123,170.79 = 59,112.46 : x
2. Step 2: Convert to fraction form
   89,301.28/123,170.79 = 59,112.46/x
3. Step 3: Cross multiply
   89,301.28x = 123,170.79 × 59,112.46
4. Step 4: Simplify right side
   89,301.28x = 7,280,928,397.04
5. Step 5: Solve for x
   x = 7,280,928,397.04/89,301.28
6. Step 6: Final answer
   x = 81,532.18