Finding the Fourth Proportional to 151,899.07, 209,619.72 and 83,920.43

Step by Step Solution

1. Step 1: Write the proportion equation
   151,899.07 : 209,619.72 = 83,920.43 : x
2. Step 2: Convert to fraction form
   151,899.07/209,619.72 = 83,920.43/x
3. Step 3: Cross multiply
   151,899.07x = 209,619.72 × 83,920.43
4. Step 4: Simplify right side
   151,899.07x = 17,591,377,038.88
5. Step 5: Solve for x
   x = 17,591,377,038.88/151,899.07
6. Step 6: Final answer
   x = 115,809.64