Finding the Fourth Proportional to 81,147.75, 111,981.81 and 45,338.01

Step by Step Solution

1. Step 1: Write the proportion equation
   81,147.75 : 111,981.81 = 45,338.01 : x
2. Step 2: Convert to fraction form
   81,147.75/111,981.81 = 45,338.01/x
3. Step 3: Cross multiply
   81,147.75x = 111,981.81 × 45,338.01
4. Step 4: Simplify right side
   81,147.75x = 5,077,031,861.69
5. Step 5: Solve for x
   x = 5,077,031,861.69/81,147.75
6. Step 6: Final answer
   x = 62,565.29