Finding the Fourth Proportional to 81,190.82, 112,048.56 and 45,380.96

Step by Step Solution

1. Step 1: Write the proportion equation
   81,190.82 : 112,048.56 = 45,380.96 : x
2. Step 2: Convert to fraction form
   81,190.82/112,048.56 = 45,380.96/x
3. Step 3: Cross multiply
   81,190.82x = 112,048.56 × 45,380.96
4. Step 4: Simplify right side
   81,190.82x = 5,084,871,219.42
5. Step 5: Solve for x
   x = 5,084,871,219.42/81,190.82
6. Step 6: Final answer
   x = 62,628.65