Finding the Fourth Proportional to 111,581.58, 153,906.16 and 71,277.45

Step by Step Solution

1. Step 1: Write the proportion equation
   111,581.58 : 153,906.16 = 71,277.45 : x
2. Step 2: Convert to fraction form
   111,581.58/153,906.16 = 71,277.45/x
3. Step 3: Cross multiply
   111,581.58x = 153,906.16 × 71,277.45
4. Step 4: Simplify right side
   111,581.58x = 10,970,038,624.09
5. Step 5: Solve for x
   x = 10,970,038,624.09/111,581.58
6. Step 6: Final answer
   x = 98,314.06