Finding the Fourth Proportional to 89,492.72, 123,501.90 and 49,209.09

Step by Step Solution

1. Step 1: Write the proportion equation
   89,492.72 : 123,501.90 = 49,209.09 : x
2. Step 2: Convert to fraction form
   89,492.72/123,501.90 = 49,209.09/x
3. Step 3: Cross multiply
   89,492.72x = 123,501.90 × 49,209.09
4. Step 4: Simplify right side
   89,492.72x = 6,077,415,833.67
5. Step 5: Solve for x
   x = 6,077,415,833.67/89,492.72
6. Step 6: Final answer
   x = 67,909.62