Finding the Fourth Proportional to 81,096.76, 121,667.28 and 39,012.04

Step by Step Solution

1. Step 1: Write the proportion equation
   81,096.76 : 121,667.28 = 39,012.04 : x
2. Step 2: Convert to fraction form
   81,096.76/121,667.28 = 39,012.04/x
3. Step 3: Cross multiply
   81,096.76x = 121,667.28 × 39,012.04
4. Step 4: Simplify right side
   81,096.76x = 4,746,488,794.05
5. Step 5: Solve for x
   x = 4,746,488,794.05/81,096.76
6. Step 6: Final answer
   x = 58,528.71