Finding the Fourth Proportional to 121,443.30, 182,132.55 and 42,549.30

Step by Step Solution

1. Step 1: Write the proportion equation
   121,443.30 : 182,132.55 = 42,549.30 : x
2. Step 2: Convert to fraction form
   121,443.30/182,132.55 = 42,549.30/x
3. Step 3: Cross multiply
   121,443.30x = 182,132.55 × 42,549.30
4. Step 4: Simplify right side
   121,443.30x = 7,749,612,509.72
5. Step 5: Solve for x
   x = 7,749,612,509.72/121,443.30
6. Step 6: Final answer
   x = 63,812.60