Finding the Fourth Proportional to 90,414.52, 135,619.98 and 28,084.84

Step by Step Solution

1. Step 1: Write the proportion equation
   90,414.52 : 135,619.98 = 28,084.84 : x
2. Step 2: Convert to fraction form
   90,414.52/135,619.98 = 28,084.84/x
3. Step 3: Cross multiply
   90,414.52x = 135,619.98 × 28,084.84
4. Step 4: Simplify right side
   90,414.52x = 3,808,865,439.10
5. Step 5: Solve for x
   x = 3,808,865,439.10/90,414.52
6. Step 6: Final answer
   x = 42,126.70