Finding the Fourth Proportional to 151,759.77, 209,431.54 and 83,776.47

Step by Step Solution

1. Step 1: Write the proportion equation
   151,759.77 : 209,431.54 = 83,776.47 : x
2. Step 2: Convert to fraction form
   151,759.77/209,431.54 = 83,776.47/x
3. Step 3: Cross multiply
   151,759.77x = 209,431.54 × 83,776.47
4. Step 4: Simplify right side
   151,759.77x = 17,545,434,080.71
5. Step 5: Solve for x
   x = 17,545,434,080.71/151,759.77
6. Step 6: Final answer
   x = 115,613.21