Finding the Fourth Proportional to 81,151.59, 111,989.76 and 45,343.11

Step by Step Solution

1. Step 1: Write the proportion equation
   81,151.59 : 111,989.76 = 45,343.11 : x
2. Step 2: Convert to fraction form
   81,151.59/111,989.76 = 45,343.11/x
3. Step 3: Cross multiply
   81,151.59x = 111,989.76 × 45,343.11
4. Step 4: Simplify right side
   81,151.59x = 5,077,964,006.55
5. Step 5: Solve for x
   x = 5,077,964,006.55/81,151.59
6. Step 6: Final answer
   x = 62,573.81