Finding the Fourth Proportional to 151,684.72, 209,325.60 and 83,702.56

Step by Step Solution

1. Step 1: Write the proportion equation
   151,684.72 : 209,325.60 = 83,702.56 : x
2. Step 2: Convert to fraction form
   151,684.72/209,325.60 = 83,702.56/x
3. Step 3: Cross multiply
   151,684.72x = 209,325.60 × 83,702.56
4. Step 4: Simplify right side
   151,684.72x = 17,521,088,593.54
5. Step 5: Solve for x
   x = 17,521,088,593.54/151,684.72
6. Step 6: Final answer
   x = 115,509.91