Finding the Fourth Proportional to 81,089.16, 111,902.00 and 45,279.78

Step by Step Solution

1. Step 1: Write the proportion equation
   81,089.16 : 111,902.00 = 45,279.78 : x
2. Step 2: Convert to fraction form
   81,089.16/111,902.00 = 45,279.78/x
3. Step 3: Cross multiply
   81,089.16x = 111,902.00 × 45,279.78
4. Step 4: Simplify right side
   81,089.16x = 5,066,897,715.16
5. Step 5: Solve for x
   x = 5,066,897,715.16/81,089.16
6. Step 6: Final answer
   x = 62,485.51