Finding the Fourth Proportional to 47,478, 65,520.72 and 30,740.16

Step by Step Solution

1. Step 1: Write the proportion equation
   47,478 : 65,520.72 = 30,740.16 : x
2. Step 2: Convert to fraction form
   47,478/65,520.72 = 30,740.16/x
3. Step 3: Cross multiply
   47,478x = 65,520.72 × 30,740.16
4. Step 4: Simplify right side
   47,478x = 2,014,117,416.12
5. Step 5: Solve for x
   x = 2,014,117,416.12/47,478
6. Step 6: Final answer
   x = 42,422.12