Finding the Fourth Proportional to 150,622.72, 207,859.60 and 83,554.72

Step by Step Solution

1. Step 1: Write the proportion equation
   150,622.72 : 207,859.60 = 83,554.72 : x
2. Step 2: Convert to fraction form
   150,622.72/207,859.60 = 83,554.72/x
3. Step 3: Cross multiply
   150,622.72x = 207,859.60 × 83,554.72
4. Step 4: Simplify right side
   150,622.72x = 17,367,650,677.31
5. Step 5: Solve for x
   x = 17,367,650,677.31/150,622.72
6. Step 6: Final answer
   x = 115,305.65