Finding the Fourth Proportional to 90,443.43, 124,786.49 and 71,263.76

Step by Step Solution

1. Step 1: Write the proportion equation
   90,443.43 : 124,786.49 = 71,263.76 : x
2. Step 2: Convert to fraction form
   90,443.43/124,786.49 = 71,263.76/x
3. Step 3: Cross multiply
   90,443.43x = 124,786.49 × 71,263.76
4. Step 4: Simplify right side
   90,443.43x = 8,892,753,494.35
5. Step 5: Solve for x
   x = 8,892,753,494.35/90,443.43
6. Step 6: Final answer
   x = 98,323.93