Finding the Fourth Proportional to 150,799.50, 208,103.31 and 83,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,799.50 : 208,103.31 = 83,731.50 : x
2. Step 2: Convert to fraction form
   150,799.50/208,103.31 = 83,731.50/x
3. Step 3: Cross multiply
   150,799.50x = 208,103.31 × 83,731.50
4. Step 4: Simplify right side
   150,799.50x = 17,424,802,301.27
5. Step 5: Solve for x
   x = 17,424,802,301.27/150,799.50
6. Step 6: Final answer
   x = 115,549.47