Finding the Fourth Proportional to 90,753, 136,134.36 and 28,428.36

Step by Step Solution

1. Step 1: Write the proportion equation
   90,753 : 136,134.36 = 28,428.36 : x
2. Step 2: Convert to fraction form
   90,753/136,134.36 = 28,428.36/x
3. Step 3: Cross multiply
   90,753x = 136,134.36 × 28,428.36
4. Step 4: Simplify right side
   90,753x = 3,870,076,594.45
5. Step 5: Solve for x
   x = 3,870,076,594.45/90,753
6. Step 6: Final answer
   x = 42,644.06