Finding the Fourth Proportional to 81,116.43, 111,929.61 and 45,301.87

Step by Step Solution

1. Step 1: Write the proportion equation
   81,116.43 : 111,929.61 = 45,301.87 : x
2. Step 2: Convert to fraction form
   81,116.43/111,929.61 = 45,301.87/x
3. Step 3: Cross multiply
   81,116.43x = 111,929.61 × 45,301.87
4. Step 4: Simplify right side
   81,116.43x = 5,070,620,641.37
5. Step 5: Solve for x
   x = 5,070,620,641.37/81,116.43
6. Step 6: Final answer
   x = 62,510.40