Finding the Fourth Proportional to 89,792.55, 134,689.50 and 39,859.23

Step by Step Solution

1. Step 1: Write the proportion equation
   89,792.55 : 134,689.50 = 39,859.23 : x
2. Step 2: Convert to fraction form
   89,792.55/134,689.50 = 39,859.23/x
3. Step 3: Cross multiply
   89,792.55x = 134,689.50 × 39,859.23
4. Step 4: Simplify right side
   89,792.55x = 5,368,619,085.64
5. Step 5: Solve for x
   x = 5,368,619,085.64/89,792.55
6. Step 6: Final answer
   x = 59,789.14