Finding the Fourth Proportional to 89,502.88, 123,511.48 and 49,216.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,502.88 : 123,511.48 = 49,216.72 : x
2. Step 2: Convert to fraction form
   89,502.88/123,511.48 = 49,216.72/x
3. Step 3: Cross multiply
   89,502.88x = 123,511.48 × 49,216.72
4. Step 4: Simplify right side
   89,502.88x = 6,078,829,927.95
5. Step 5: Solve for x
   x = 6,078,829,927.95/89,502.88
6. Step 6: Final answer
   x = 67,917.70