Finding the Fourth Proportional to 65,043.04, 89,787.06 and 39,557.60

Step by Step Solution

1. Step 1: Write the proportion equation
   65,043.04 : 89,787.06 = 39,557.60 : x
2. Step 2: Convert to fraction form
   65,043.04/89,787.06 = 39,557.60/x
3. Step 3: Cross multiply
   65,043.04x = 89,787.06 × 39,557.60
4. Step 4: Simplify right side
   65,043.04x = 3,551,760,155.72
5. Step 5: Solve for x
   x = 3,551,760,155.72/65,043.04
6. Step 6: Final answer
   x = 54,606.31