Finding the Fourth Proportional to 90,101.56, 134,817.54 and 56,665.48

Step by Step Solution

1. Step 1: Write the proportion equation
   90,101.56 : 134,817.54 = 56,665.48 : x
2. Step 2: Convert to fraction form
   90,101.56/134,817.54 = 56,665.48/x
3. Step 3: Cross multiply
   90,101.56x = 134,817.54 × 56,665.48
4. Step 4: Simplify right side
   90,101.56x = 7,639,500,616.52
5. Step 5: Solve for x
   x = 7,639,500,616.52/90,101.56
6. Step 6: Final answer
   x = 84,787.66