Finding the Fourth Proportional to 136,789.88, 205,086.51 and 64,702.82

Step by Step Solution

1. Step 1: Write the proportion equation
   136,789.88 : 205,086.51 = 64,702.82 : x
2. Step 2: Convert to fraction form
   136,789.88/205,086.51 = 64,702.82/x
3. Step 3: Cross multiply
   136,789.88x = 205,086.51 × 64,702.82
4. Step 4: Simplify right side
   136,789.88x = 13,269,675,540.96
5. Step 5: Solve for x
   x = 13,269,675,540.96/136,789.88
6. Step 6: Final answer
   x = 97,007.73