Finding the Fourth Proportional to 89,628.80, 134,437.76 and 39,694.24

Step by Step Solution

1. Step 1: Write the proportion equation
   89,628.80 : 134,437.76 = 39,694.24 : x
2. Step 2: Convert to fraction form
   89,628.80/134,437.76 = 39,694.24/x
3. Step 3: Cross multiply
   89,628.80x = 134,437.76 × 39,694.24
4. Step 4: Simplify right side
   89,628.80x = 5,336,404,710.50
5. Step 5: Solve for x
   x = 5,336,404,710.50/89,628.80
6. Step 6: Final answer
   x = 59,538.95