Finding the Fourth Proportional to 90,073.34, 134,450.42 and 79,432.91

Step by Step Solution

1. Step 1: Write the proportion equation
   90,073.34 : 134,450.42 = 79,432.91 : x
2. Step 2: Convert to fraction form
   90,073.34/134,450.42 = 79,432.91/x
3. Step 3: Cross multiply
   90,073.34x = 134,450.42 × 79,432.91
4. Step 4: Simplify right side
   90,073.34x = 10,679,787,714.16
5. Step 5: Solve for x
   x = 10,679,787,714.16/90,073.34
6. Step 6: Final answer
   x = 118,567.69