Finding the Fourth Proportional to 115,522.50, 159,422.28 and 67,776.65

Step by Step Solution

1. Step 1: Write the proportion equation
   115,522.50 : 159,422.28 = 67,776.65 : x
2. Step 2: Convert to fraction form
   115,522.50/159,422.28 = 67,776.65/x
3. Step 3: Cross multiply
   115,522.50x = 159,422.28 × 67,776.65
4. Step 4: Simplify right side
   115,522.50x = 10,805,107,620.32
5. Step 5: Solve for x
   x = 10,805,107,620.32/115,522.50
6. Step 6: Final answer
   x = 93,532.49