Finding the Fourth Proportional to 111,585.59, 153,911.67 and 71,281.46

Step by Step Solution

1. Step 1: Write the proportion equation
   111,585.59 : 153,911.67 = 71,281.46 : x
2. Step 2: Convert to fraction form
   111,585.59/153,911.67 = 71,281.46/x
3. Step 3: Cross multiply
   111,585.59x = 153,911.67 × 71,281.46
4. Step 4: Simplify right side
   111,585.59x = 10,971,048,548.64
5. Step 5: Solve for x
   x = 10,971,048,548.64/111,585.59
6. Step 6: Final answer
   x = 98,319.58