Finding the Fourth Proportional to 81,612.96, 112,626.72 and 45,315

Step by Step Solution

1. Step 1: Write the proportion equation
   81,612.96 : 112,626.72 = 45,315 : x
2. Step 2: Convert to fraction form
   81,612.96/112,626.72 = 45,315/x
3. Step 3: Cross multiply
   81,612.96x = 112,626.72 × 45,315
4. Step 4: Simplify right side
   81,612.96x = 5,103,679,816.80
5. Step 5: Solve for x
   x = 5,103,679,816.80/81,612.96
6. Step 6: Final answer
   x = 62,535.16