Finding the Fourth Proportional to 151,128.63, 208,557.52 and 83,144.15

Step by Step Solution

1. Step 1: Write the proportion equation
   151,128.63 : 208,557.52 = 83,144.15 : x
2. Step 2: Convert to fraction form
   151,128.63/208,557.52 = 83,144.15/x
3. Step 3: Cross multiply
   151,128.63x = 208,557.52 × 83,144.15
4. Step 4: Simplify right side
   151,128.63x = 17,340,337,257.95
5. Step 5: Solve for x
   x = 17,340,337,257.95/151,128.63
6. Step 6: Final answer
   x = 114,738.93