Finding the Fourth Proportional to 89,282.16, 123,213.24 and 53,478

Step by Step Solution

1. Step 1: Write the proportion equation
   89,282.16 : 123,213.24 = 53,478 : x
2. Step 2: Convert to fraction form
   89,282.16/123,213.24 = 53,478/x
3. Step 3: Cross multiply
   89,282.16x = 123,213.24 × 53,478
4. Step 4: Simplify right side
   89,282.16x = 6,589,197,648.72
5. Step 5: Solve for x
   x = 6,589,197,648.72/89,282.16
6. Step 6: Final answer
   x = 73,801.95