Finding the Fourth Proportional to 81,443.03, 112,390.28 and 45,633.74

Step by Step Solution

1. Step 1: Write the proportion equation
   81,443.03 : 112,390.28 = 45,633.74 : x
2. Step 2: Convert to fraction form
   81,443.03/112,390.28 = 45,633.74/x
3. Step 3: Cross multiply
   81,443.03x = 112,390.28 × 45,633.74
4. Step 4: Simplify right side
   81,443.03x = 5,128,788,025.93
5. Step 5: Solve for x
   x = 5,128,788,025.93/81,443.03
6. Step 6: Final answer
   x = 62,973.94