Finding the Fourth Proportional to 82,790.92, 114,248.30 and 46,978.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,790.92 : 114,248.30 = 46,978.80 : x
2. Step 2: Convert to fraction form
   82,790.92/114,248.30 = 46,978.80/x
3. Step 3: Cross multiply
   82,790.92x = 114,248.30 × 46,978.80
4. Step 4: Simplify right side
   82,790.92x = 5,367,248,036.04
5. Step 5: Solve for x
   x = 5,367,248,036.04/82,790.92
6. Step 6: Final answer
   x = 64,828.95