Finding the Fourth Proportional to 151,686.53, 209,328.03 and 83,705.49

Step by Step Solution

1. Step 1: Write the proportion equation
   151,686.53 : 209,328.03 = 83,705.49 : x
2. Step 2: Convert to fraction form
   151,686.53/209,328.03 = 83,705.49/x
3. Step 3: Cross multiply
   151,686.53x = 209,328.03 × 83,705.49
4. Step 4: Simplify right side
   151,686.53x = 17,521,905,321.88
5. Step 5: Solve for x
   x = 17,521,905,321.88/151,686.53
6. Step 6: Final answer
   x = 115,513.92