Finding the Fourth Proportional to 151,642.47, 209,267.30 and 83,660.25

Step by Step Solution

1. Step 1: Write the proportion equation
   151,642.47 : 209,267.30 = 83,660.25 : x
2. Step 2: Convert to fraction form
   151,642.47/209,267.30 = 83,660.25/x
3. Step 3: Cross multiply
   151,642.47x = 209,267.30 × 83,660.25
4. Step 4: Simplify right side
   151,642.47x = 17,507,354,843.98
5. Step 5: Solve for x
   x = 17,507,354,843.98/151,642.47
6. Step 6: Final answer
   x = 115,451.53