Finding the Fourth Proportional to 316,867.01, 475,300.86 and 80,209.69

Step by Step Solution

1. Step 1: Write the proportion equation
   316,867.01 : 475,300.86 = 80,209.69 : x
2. Step 2: Convert to fraction form
   316,867.01/475,300.86 = 80,209.69/x
3. Step 3: Cross multiply
   316,867.01x = 475,300.86 × 80,209.69
4. Step 4: Simplify right side
   316,867.01x = 38,123,731,859.78
5. Step 5: Solve for x
   x = 38,123,731,859.78/316,867.01
6. Step 6: Final answer
   x = 120,314.62