Finding the Fourth Proportional to 151,790.64, 209,469.96 and 83,807.76

Step by Step Solution

1. Step 1: Write the proportion equation
   151,790.64 : 209,469.96 = 83,807.76 : x
2. Step 2: Convert to fraction form
   151,790.64/209,469.96 = 83,807.76/x
3. Step 3: Cross multiply
   151,790.64x = 209,469.96 × 83,807.76
4. Step 4: Simplify right side
   151,790.64x = 17,555,208,134.89
5. Step 5: Solve for x
   x = 17,555,208,134.89/151,790.64
6. Step 6: Final answer
   x = 115,654.09