Finding the Fourth Proportional to 151,683.86, 209,315.54 and 83,687.51

Step by Step Solution

1. Step 1: Write the proportion equation
   151,683.86 : 209,315.54 = 83,687.51 : x
2. Step 2: Convert to fraction form
   151,683.86/209,315.54 = 83,687.51/x
3. Step 3: Cross multiply
   151,683.86x = 209,315.54 × 83,687.51
4. Step 4: Simplify right side
   151,683.86x = 17,517,094,881.89
5. Step 5: Solve for x
   x = 17,517,094,881.89/151,683.86
6. Step 6: Final answer
   x = 115,484.24