Finding the Fourth Proportional to 89,312.07, 123,243.88 and 49,019.43

Step by Step Solution

1. Step 1: Write the proportion equation
   89,312.07 : 123,243.88 = 49,019.43 : x
2. Step 2: Convert to fraction form
   89,312.07/123,243.88 = 49,019.43/x
3. Step 3: Cross multiply
   89,312.07x = 123,243.88 × 49,019.43
4. Step 4: Simplify right side
   89,312.07x = 6,041,344,748.59
5. Step 5: Solve for x
   x = 6,041,344,748.59/89,312.07
6. Step 6: Final answer
   x = 67,643.09