Finding the Fourth Proportional to 89,357.88, 123,323.72 and 51,120.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89,357.88 : 123,323.72 = 51,120.98 : x
2. Step 2: Convert to fraction form
   89,357.88/123,323.72 = 51,120.98/x
3. Step 3: Cross multiply
   89,357.88x = 123,323.72 × 51,120.98
4. Step 4: Simplify right side
   89,357.88x = 6,304,429,423.65
5. Step 5: Solve for x
   x = 6,304,429,423.65/89,357.88
6. Step 6: Final answer
   x = 70,552.58