Finding the Fourth Proportional to 82,047.90, 123,328.74 and 54,147.25

Step by Step Solution

1. Step 1: Write the proportion equation
   82,047.90 : 123,328.74 = 54,147.25 : x
2. Step 2: Convert to fraction form
   82,047.90/123,328.74 = 54,147.25/x
3. Step 3: Cross multiply
   82,047.90x = 123,328.74 × 54,147.25
4. Step 4: Simplify right side
   82,047.90x = 6,677,911,500.32
5. Step 5: Solve for x
   x = 6,677,911,500.32/82,047.90
6. Step 6: Final answer
   x = 81,390.41