Finding the Fourth Proportional to 82,911, 114,417.20 and 45,185.28

Step by Step Solution

1. Step 1: Write the proportion equation
   82,911 : 114,417.20 = 45,185.28 : x
2. Step 2: Convert to fraction form
   82,911/114,417.20 = 45,185.28/x
3. Step 3: Cross multiply
   82,911x = 114,417.20 × 45,185.28
4. Step 4: Simplify right side
   82,911x = 5,169,973,218.82
5. Step 5: Solve for x
   x = 5,169,973,218.82/82,911
6. Step 6: Final answer
   x = 62,355.70