Finding the Fourth Proportional to 151,899.32, 209,620.06 and 83,920.68

Step by Step Solution

1. Step 1: Write the proportion equation
   151,899.32 : 209,620.06 = 83,920.68 : x
2. Step 2: Convert to fraction form
   151,899.32/209,620.06 = 83,920.68/x
3. Step 3: Cross multiply
   151,899.32x = 209,620.06 × 83,920.68
4. Step 4: Simplify right side
   151,899.32x = 17,591,457,767.04
5. Step 5: Solve for x
   x = 17,591,457,767.04/151,899.32
6. Step 6: Final answer
   x = 115,809.98