Finding the Fourth Proportional to 90,592.82, 135,861.89 and 37,990.61

Step by Step Solution

1. Step 1: Write the proportion equation
   90,592.82 : 135,861.89 = 37,990.61 : x
2. Step 2: Convert to fraction form
   90,592.82/135,861.89 = 37,990.61/x
3. Step 3: Cross multiply
   90,592.82x = 135,861.89 × 37,990.61
4. Step 4: Simplify right side
   90,592.82x = 5,161,476,076.85
5. Step 5: Solve for x
   x = 5,161,476,076.85/90,592.82
6. Step 6: Final answer
   x = 56,974.45