Finding the Fourth Proportional to 90,497.96, 124,960.56 and 56,546

Step by Step Solution

1. Step 1: Write the proportion equation
   90,497.96 : 124,960.56 = 56,546 : x
2. Step 2: Convert to fraction form
   90,497.96/124,960.56 = 56,546/x
3. Step 3: Cross multiply
   90,497.96x = 124,960.56 × 56,546
4. Step 4: Simplify right side
   90,497.96x = 7,066,019,825.76
5. Step 5: Solve for x
   x = 7,066,019,825.76/90,497.96
6. Step 6: Final answer
   x = 78,079.33