Finding the Fourth Proportional to 136,540.54, 204,903.69 and 83,789.02

Step by Step Solution

1. Step 1: Write the proportion equation
   136,540.54 : 204,903.69 = 83,789.02 : x
2. Step 2: Convert to fraction form
   136,540.54/204,903.69 = 83,789.02/x
3. Step 3: Cross multiply
   136,540.54x = 204,903.69 × 83,789.02
4. Step 4: Simplify right side
   136,540.54x = 17,168,679,379.48
5. Step 5: Solve for x
   x = 17,168,679,379.48/136,540.54
6. Step 6: Final answer
   x = 125,740.53