Finding the Fourth Proportional to 90,333.98, 135,446.29 and 40,404.77

Step by Step Solution

1. Step 1: Write the proportion equation
   90,333.98 : 135,446.29 = 40,404.77 : x
2. Step 2: Convert to fraction form
   90,333.98/135,446.29 = 40,404.77/x
3. Step 3: Cross multiply
   90,333.98x = 135,446.29 × 40,404.77
4. Step 4: Simplify right side
   90,333.98x = 5,472,675,416.56
5. Step 5: Solve for x
   x = 5,472,675,416.56/90,333.98
6. Step 6: Final answer
   x = 60,582.69