Finding the Fourth Proportional to 121,886.28, 182,844.54 and 42,984.72

Step by Step Solution

1. Step 1: Write the proportion equation
   121,886.28 : 182,844.54 = 42,984.72 : x
2. Step 2: Convert to fraction form
   121,886.28/182,844.54 = 42,984.72/x
3. Step 3: Cross multiply
   121,886.28x = 182,844.54 × 42,984.72
4. Step 4: Simplify right side
   121,886.28x = 7,859,521,355.43
5. Step 5: Solve for x
   x = 7,859,521,355.43/121,886.28
6. Step 6: Final answer
   x = 64,482.41