Finding the Fourth Proportional to 89,591.61, 123,594.89 and 53,719.28

Step by Step Solution

1. Step 1: Write the proportion equation
   89,591.61 : 123,594.89 = 53,719.28 : x
2. Step 2: Convert to fraction form
   89,591.61/123,594.89 = 53,719.28/x
3. Step 3: Cross multiply
   89,591.61x = 123,594.89 × 53,719.28
4. Step 4: Simplify right side
   89,591.61x = 6,639,427,615.91
5. Step 5: Solve for x
   x = 6,639,427,615.91/89,591.61
6. Step 6: Final answer
   x = 74,107.69