Finding the Fourth Proportional to 111,581.84, 153,906.50 and 71,277.70

Step by Step Solution

1. Step 1: Write the proportion equation
   111,581.84 : 153,906.50 = 71,277.70 : x
2. Step 2: Convert to fraction form
   111,581.84/153,906.50 = 71,277.70/x
3. Step 3: Cross multiply
   111,581.84x = 153,906.50 × 71,277.70
4. Step 4: Simplify right side
   111,581.84x = 10,970,100,565.52
5. Step 5: Solve for x
   x = 10,970,100,565.52/111,581.84
6. Step 6: Final answer
   x = 98,314.39