Finding the Fourth Proportional to 121,766.72, 182,672.76 and 42,931.04

Step by Step Solution

1. Step 1: Write the proportion equation
   121,766.72 : 182,672.76 = 42,931.04 : x
2. Step 2: Convert to fraction form
   121,766.72/182,672.76 = 42,931.04/x
3. Step 3: Cross multiply
   121,766.72x = 182,672.76 × 42,931.04
4. Step 4: Simplify right side
   121,766.72x = 7,842,331,566.47
5. Step 5: Solve for x
   x = 7,842,331,566.47/121,766.72
6. Step 6: Final answer
   x = 64,404.56