Finding the Fourth Proportional to 89,298.78, 123,228.27 and 53,508.66

Step by Step Solution

1. Step 1: Write the proportion equation
   89,298.78 : 123,228.27 = 53,508.66 : x
2. Step 2: Convert to fraction form
   89,298.78/123,228.27 = 53,508.66/x
3. Step 3: Cross multiply
   89,298.78x = 123,228.27 × 53,508.66
4. Step 4: Simplify right side
   89,298.78x = 6,593,779,601.82
5. Step 5: Solve for x
   x = 6,593,779,601.82/89,298.78
6. Step 6: Final answer
   x = 73,839.53