Finding the Fourth Proportional to 121,579.76, 182,387.86 and 42,680.10

Step by Step Solution

1. Step 1: Write the proportion equation
   121,579.76 : 182,387.86 = 42,680.10 : x
2. Step 2: Convert to fraction form
   121,579.76/182,387.86 = 42,680.10/x
3. Step 3: Cross multiply
   121,579.76x = 182,387.86 × 42,680.10
4. Step 4: Simplify right side
   121,579.76x = 7,784,332,103.59
5. Step 5: Solve for x
   x = 7,784,332,103.59/121,579.76
6. Step 6: Final answer
   x = 64,026.55