Finding the Fourth Proportional to 68,659.82, 103,006.17 and 28,656.56

Step by Step Solution

1. Step 1: Write the proportion equation
   68,659.82 : 103,006.17 = 28,656.56 : x
2. Step 2: Convert to fraction form
   68,659.82/103,006.17 = 28,656.56/x
3. Step 3: Cross multiply
   68,659.82x = 103,006.17 × 28,656.56
4. Step 4: Simplify right side
   68,659.82x = 2,951,802,490.98
5. Step 5: Solve for x
   x = 2,951,802,490.98/68,659.82
6. Step 6: Final answer
   x = 42,991.70