Finding the Fourth Proportional to 128,682, 193,100.76 and 54,810

Step by Step Solution

1. Step 1: Write the proportion equation
   128,682 : 193,100.76 = 54,810 : x
2. Step 2: Convert to fraction form
   128,682/193,100.76 = 54,810/x
3. Step 3: Cross multiply
   128,682x = 193,100.76 × 54,810
4. Step 4: Simplify right side
   128,682x = 10,583,852,655.60
5. Step 5: Solve for x
   x = 10,583,852,655.60/128,682
6. Step 6: Final answer
   x = 82,248.12