Finding the Fourth Proportional to 81,499.81, 112,469.66 and 45,689.83

Step by Step Solution

1. Step 1: Write the proportion equation
   81,499.81 : 112,469.66 = 45,689.83 : x
2. Step 2: Convert to fraction form
   81,499.81/112,469.66 = 45,689.83/x
3. Step 3: Cross multiply
   81,499.81x = 112,469.66 × 45,689.83
4. Step 4: Simplify right side
   81,499.81x = 5,138,719,307.27
5. Step 5: Solve for x
   x = 5,138,719,307.27/81,499.81
6. Step 6: Final answer
   x = 63,051.92