Finding the Fourth Proportional to 81,659.59, 122,374.52 and 64,945.44

Step by Step Solution

1. Step 1: Write the proportion equation
   81,659.59 : 122,374.52 = 64,945.44 : x
2. Step 2: Convert to fraction form
   81,659.59/122,374.52 = 64,945.44/x
3. Step 3: Cross multiply
   81,659.59x = 122,374.52 × 64,945.44
4. Step 4: Simplify right side
   81,659.59x = 7,947,667,046.19
5. Step 5: Solve for x
   x = 7,947,667,046.19/81,659.59
6. Step 6: Final answer
   x = 97,326.81