Finding the Fourth Proportional to 89,407.84, 123,385 and 49,124.21

Step by Step Solution

1. Step 1: Write the proportion equation
   89,407.84 : 123,385 = 49,124.21 : x
2. Step 2: Convert to fraction form
   89,407.84/123,385 = 49,124.21/x
3. Step 3: Cross multiply
   89,407.84x = 123,385 × 49,124.21
4. Step 4: Simplify right side
   89,407.84x = 6,061,190,650.85
5. Step 5: Solve for x
   x = 6,061,190,650.85/89,407.84
6. Step 6: Final answer
   x = 67,792.61