Finding the Fourth Proportional to 150,621.72, 207,858.22 and 83,553.72

Step by Step Solution

1. Step 1: Write the proportion equation
   150,621.72 : 207,858.22 = 83,553.72 : x
2. Step 2: Convert to fraction form
   150,621.72/207,858.22 = 83,553.72/x
3. Step 3: Cross multiply
   150,621.72x = 207,858.22 × 83,553.72
4. Step 4: Simplify right side
   150,621.72x = 17,367,327,513.58
5. Step 5: Solve for x
   x = 17,367,327,513.58/150,621.72
6. Step 6: Final answer
   x = 115,304.27