Finding the Fourth Proportional to 111,556.02, 153,902.78 and 71,259.34

Step by Step Solution

1. Step 1: Write the proportion equation
   111,556.02 : 153,902.78 = 71,259.34 : x
2. Step 2: Convert to fraction form
   111,556.02/153,902.78 = 71,259.34/x
3. Step 3: Cross multiply
   111,556.02x = 153,902.78 × 71,259.34
4. Step 4: Simplify right side
   111,556.02x = 10,967,010,526.97
5. Step 5: Solve for x
   x = 10,967,010,526.97/111,556.02
6. Step 6: Final answer
   x = 98,309.45