Finding the Fourth Proportional to 83,636.99, 115,441.17 and 51,787.79

Step by Step Solution

1. Step 1: Write the proportion equation
   83,636.99 : 115,441.17 = 51,787.79 : x
2. Step 2: Convert to fraction form
   83,636.99/115,441.17 = 51,787.79/x
3. Step 3: Cross multiply
   83,636.99x = 115,441.17 × 51,787.79
4. Step 4: Simplify right side
   83,636.99x = 5,978,443,069.31
5. Step 5: Solve for x
   x = 5,978,443,069.31/83,636.99
6. Step 6: Final answer
   x = 71,480.85