Finding the Fourth Proportional to 47,691.60, 65,804.85 and 30,669.18

Step by Step Solution

1. Step 1: Write the proportion equation
   47,691.60 : 65,804.85 = 30,669.18 : x
2. Step 2: Convert to fraction form
   47,691.60/65,804.85 = 30,669.18/x
3. Step 3: Cross multiply
   47,691.60x = 65,804.85 × 30,669.18
4. Step 4: Simplify right side
   47,691.60x = 2,018,180,789.52
5. Step 5: Solve for x
   x = 2,018,180,789.52/47,691.60
6. Step 6: Final answer
   x = 42,317.32