Finding the Fourth Proportional to 86,778, 119,753.72 and 47,034

Step by Step Solution

1. Step 1: Write the proportion equation
   86,778 : 119,753.72 = 47,034 : x
2. Step 2: Convert to fraction form
   86,778/119,753.72 = 47,034/x
3. Step 3: Cross multiply
   86,778x = 119,753.72 × 47,034
4. Step 4: Simplify right side
   86,778x = 5,632,496,466.48
5. Step 5: Solve for x
   x = 5,632,496,466.48/86,778
6. Step 6: Final answer
   x = 64,906.96