Finding the Fourth Proportional to 150,741.78, 208,013.25 and 83,668.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,741.78 : 208,013.25 = 83,668.50 : x
2. Step 2: Convert to fraction form
   150,741.78/208,013.25 = 83,668.50/x
3. Step 3: Cross multiply
   150,741.78x = 208,013.25 × 83,668.50
4. Step 4: Simplify right side
   150,741.78x = 17,404,156,607.63
5. Step 5: Solve for x
   x = 17,404,156,607.63/150,741.78
6. Step 6: Final answer
   x = 115,456.75