Finding the Fourth Proportional to 90,072.84, 134,449.67 and 79,432.41

Step by Step Solution

1. Step 1: Write the proportion equation
   90,072.84 : 134,449.67 = 79,432.41 : x
2. Step 2: Convert to fraction form
   90,072.84/134,449.67 = 79,432.41/x
3. Step 3: Cross multiply
   90,072.84x = 134,449.67 × 79,432.41
4. Step 4: Simplify right side
   90,072.84x = 10,679,661,311.80
5. Step 5: Solve for x
   x = 10,679,661,311.80/90,072.84
6. Step 6: Final answer
   x = 118,566.94