Finding the Fourth Proportional to 80,501.84, 120,470.25 and 64,667.96

Step by Step Solution

1. Step 1: Write the proportion equation
   80,501.84 : 120,470.25 = 64,667.96 : x
2. Step 2: Convert to fraction form
   80,501.84/120,470.25 = 64,667.96/x
3. Step 3: Cross multiply
   80,501.84x = 120,470.25 × 64,667.96
4. Step 4: Simplify right side
   80,501.84x = 7,790,565,308.19
5. Step 5: Solve for x
   x = 7,790,565,308.19/80,501.84
6. Step 6: Final answer
   x = 96,775.00