Finding the Fourth Proportional to 121,783.47, 182,697.89 and 42,947.79

Step by Step Solution

1. Step 1: Write the proportion equation
   121,783.47 : 182,697.89 = 42,947.79 : x
2. Step 2: Convert to fraction form
   121,783.47/182,697.89 = 42,947.79/x
3. Step 3: Cross multiply
   121,783.47x = 182,697.89 × 42,947.79
4. Step 4: Simplify right side
   121,783.47x = 7,846,470,398.42
5. Step 5: Solve for x
   x = 7,846,470,398.42/121,783.47
6. Step 6: Final answer
   x = 64,429.68