Finding the Fourth Proportional to 90,105.60, 135,160.20 and 23,541.60

Step by Step Solution

1. Step 1: Write the proportion equation
   90,105.60 : 135,160.20 = 23,541.60 : x
2. Step 2: Convert to fraction form
   90,105.60/135,160.20 = 23,541.60/x
3. Step 3: Cross multiply
   90,105.60x = 135,160.20 × 23,541.60
4. Step 4: Simplify right side
   90,105.60x = 3,181,887,364.32
5. Step 5: Solve for x
   x = 3,181,887,364.32/90,105.60
6. Step 6: Final answer
   x = 35,312.87