Finding the Fourth Proportional to 89,501.88, 123,510.10 and 49,215.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,501.88 : 123,510.10 = 49,215.72 : x
2. Step 2: Convert to fraction form
   89,501.88/123,510.10 = 49,215.72/x
3. Step 3: Cross multiply
   89,501.88x = 123,510.10 × 49,215.72
4. Step 4: Simplify right side
   89,501.88x = 6,078,638,498.77
5. Step 5: Solve for x
   x = 6,078,638,498.77/89,501.88
6. Step 6: Final answer
   x = 67,916.32