Finding the Fourth Proportional to 47,851.32, 65,965.59 and 31,691.55

Step by Step Solution

1. Step 1: Write the proportion equation
   47,851.32 : 65,965.59 = 31,691.55 : x
2. Step 2: Convert to fraction form
   47,851.32/65,965.59 = 31,691.55/x
3. Step 3: Cross multiply
   47,851.32x = 65,965.59 × 31,691.55
4. Step 4: Simplify right side
   47,851.32x = 2,090,551,793.76
5. Step 5: Solve for x
   x = 2,090,551,793.76/47,851.32
6. Step 6: Final answer
   x = 43,688.49