Finding the Fourth Proportional to 151,830.86, 209,528.26 and 83,847.72

Step by Step Solution

1. Step 1: Write the proportion equation
   151,830.86 : 209,528.26 = 83,847.72 : x
2. Step 2: Convert to fraction form
   151,830.86/209,528.26 = 83,847.72/x
3. Step 3: Cross multiply
   151,830.86x = 209,528.26 × 83,847.72
4. Step 4: Simplify right side
   151,830.86x = 17,568,466,876.57
5. Step 5: Solve for x
   x = 17,568,466,876.57/151,830.86
6. Step 6: Final answer
   x = 115,710.78