Finding the Fourth Proportional to 89,223.52, 123,128.28 and 51,497.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,223.52 : 123,128.28 = 51,497.76 : x
2. Step 2: Convert to fraction form
   89,223.52/123,128.28 = 51,497.76/x
3. Step 3: Cross multiply
   89,223.52x = 123,128.28 × 51,497.76
4. Step 4: Simplify right side
   89,223.52x = 6,340,830,612.65
5. Step 5: Solve for x
   x = 6,340,830,612.65/89,223.52
6. Step 6: Final answer
   x = 71,066.81