Finding the Fourth Proportional to 151,781.31, 209,470.73 and 83,805.03

Step by Step Solution

1. Step 1: Write the proportion equation
   151,781.31 : 209,470.73 = 83,805.03 : x
2. Step 2: Convert to fraction form
   151,781.31/209,470.73 = 83,805.03/x
3. Step 3: Cross multiply
   151,781.31x = 209,470.73 × 83,805.03
4. Step 4: Simplify right side
   151,781.31x = 17,554,700,392.75
5. Step 5: Solve for x
   x = 17,554,700,392.75/151,781.31
6. Step 6: Final answer
   x = 115,657.85