Finding the Fourth Proportional to 79,501.59, 119,256.50 and 20,337.78

Step by Step Solution

1. Step 1: Write the proportion equation
   79,501.59 : 119,256.50 = 20,337.78 : x
2. Step 2: Convert to fraction form
   79,501.59/119,256.50 = 20,337.78/x
3. Step 3: Cross multiply
   79,501.59x = 119,256.50 × 20,337.78
4. Step 4: Simplify right side
   79,501.59x = 2,425,412,460.57
5. Step 5: Solve for x
   x = 2,425,412,460.57/79,501.59
6. Step 6: Final answer
   x = 30,507.72