Finding the Fourth Proportional to 81,483.26, 112,462.71 and 53,139.74

Step by Step Solution

1. Step 1: Write the proportion equation
   81,483.26 : 112,462.71 = 53,139.74 : x
2. Step 2: Convert to fraction form
   81,483.26/112,462.71 = 53,139.74/x
3. Step 3: Cross multiply
   81,483.26x = 112,462.71 × 53,139.74
4. Step 4: Simplify right side
   81,483.26x = 5,976,239,169.10
5. Step 5: Solve for x
   x = 5,976,239,169.10/81,483.26
6. Step 6: Final answer
   x = 73,343.15