Finding the Fourth Proportional to 81,287.75, 112,181.46 and 45,475.63

Step by Step Solution

1. Step 1: Write the proportion equation
   81,287.75 : 112,181.46 = 45,475.63 : x
2. Step 2: Convert to fraction form
   81,287.75/112,181.46 = 45,475.63/x
3. Step 3: Cross multiply
   81,287.75x = 112,181.46 × 45,475.63
4. Step 4: Simplify right side
   81,287.75x = 5,101,522,116.83
5. Step 5: Solve for x
   x = 5,101,522,116.83/81,287.75
6. Step 6: Final answer
   x = 62,758.80