Finding the Fourth Proportional to 151,760.25, 209,432.50 and 83,777.06

Step by Step Solution

1. Step 1: Write the proportion equation
   151,760.25 : 209,432.50 = 83,777.06 : x
2. Step 2: Convert to fraction form
   151,760.25/209,432.50 = 83,777.06/x
3. Step 3: Cross multiply
   151,760.25x = 209,432.50 × 83,777.06
4. Step 4: Simplify right side
   151,760.25x = 17,545,639,432.59
5. Step 5: Solve for x
   x = 17,545,639,432.59/151,760.25
6. Step 6: Final answer
   x = 115,614.20