Finding the Fourth Proportional to 81,617.33, 112,642.90 and 45,809.30

Step by Step Solution

1. Step 1: Write the proportion equation
   81,617.33 : 112,642.90 = 45,809.30 : x
2. Step 2: Convert to fraction form
   81,617.33/112,642.90 = 45,809.30/x
3. Step 3: Cross multiply
   81,617.33x = 112,642.90 × 45,809.30
4. Step 4: Simplify right side
   81,617.33x = 5,160,091,835.76
5. Step 5: Solve for x
   x = 5,160,091,835.76/81,617.33
6. Step 6: Final answer
   x = 63,223.00