Finding the Fourth Proportional to 90,566.28, 124,956.18 and 56,609.33

Step by Step Solution

1. Step 1: Write the proportion equation
   90,566.28 : 124,956.18 = 56,609.33 : x
2. Step 2: Convert to fraction form
   90,566.28/124,956.18 = 56,609.33/x
3. Step 3: Cross multiply
   90,566.28x = 124,956.18 × 56,609.33
4. Step 4: Simplify right side
   90,566.28x = 7,073,685,004.38
5. Step 5: Solve for x
   x = 7,073,685,004.38/90,566.28
6. Step 6: Final answer
   x = 78,105.06