Finding the Fourth Proportional to 81,722.24, 112,788.06 and 45,915.02

Step by Step Solution

1. Step 1: Write the proportion equation
   81,722.24 : 112,788.06 = 45,915.02 : x
2. Step 2: Convert to fraction form
   81,722.24/112,788.06 = 45,915.02/x
3. Step 3: Cross multiply
   81,722.24x = 112,788.06 × 45,915.02
4. Step 4: Simplify right side
   81,722.24x = 5,178,666,030.66
5. Step 5: Solve for x
   x = 5,178,666,030.66/81,722.24
6. Step 6: Final answer
   x = 63,369.12