Finding the Fourth Proportional to 111,583.59, 153,908.91 and 71,279.46

Step by Step Solution

1. Step 1: Write the proportion equation
   111,583.59 : 153,908.91 = 71,279.46 : x
2. Step 2: Convert to fraction form
   111,583.59/153,908.91 = 71,279.46/x
3. Step 3: Cross multiply
   111,583.59x = 153,908.91 × 71,279.46
4. Step 4: Simplify right side
   111,583.59x = 10,970,543,993.99
5. Step 5: Solve for x
   x = 10,970,543,993.99/111,583.59
6. Step 6: Final answer
   x = 98,316.82