Finding the Fourth Proportional to 89,255.63, 133,817.81 and 42,541.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,255.63 : 133,817.81 = 42,541.31 : x
2. Step 2: Convert to fraction form
   89,255.63/133,817.81 = 42,541.31/x
3. Step 3: Cross multiply
   89,255.63x = 133,817.81 × 42,541.31
4. Step 4: Simplify right side
   89,255.63x = 5,692,784,056.94
5. Step 5: Solve for x
   x = 5,692,784,056.94/89,255.63
6. Step 6: Final answer
   x = 63,780.68