Finding the Fourth Proportional to 133,072.72, 183,635.72 and 79,330

Step by Step Solution

1. Step 1: Write the proportion equation
   133,072.72 : 183,635.72 = 79,330 : x
2. Step 2: Convert to fraction form
   133,072.72/183,635.72 = 79,330/x
3. Step 3: Cross multiply
   133,072.72x = 183,635.72 × 79,330
4. Step 4: Simplify right side
   133,072.72x = 14,567,821,667.60
5. Step 5: Solve for x
   x = 14,567,821,667.60/133,072.72
6. Step 6: Final answer
   x = 109,472.64