Finding the Fourth Proportional to 79,474, 109,670.20 and 47,636.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,474 : 109,670.20 = 47,636.72 : x
2. Step 2: Convert to fraction form
   79,474/109,670.20 = 47,636.72/x
3. Step 3: Cross multiply
   79,474x = 109,670.20 × 47,636.72
4. Step 4: Simplify right side
   79,474x = 5,224,328,609.74
5. Step 5: Solve for x
   x = 5,224,328,609.74/79,474
6. Step 6: Final answer
   x = 65,736.32