Finding the Fourth Proportional to 86,890.78, 119,909.22 and 47,146.78

Step by Step Solution

1. Step 1: Write the proportion equation
   86,890.78 : 119,909.22 = 47,146.78 : x
2. Step 2: Convert to fraction form
   86,890.78/119,909.22 = 47,146.78/x
3. Step 3: Cross multiply
   86,890.78x = 119,909.22 × 47,146.78
4. Step 4: Simplify right side
   86,890.78x = 5,653,333,615.31
5. Step 5: Solve for x
   x = 5,653,333,615.31/86,890.78
6. Step 6: Final answer
   x = 65,062.53