Finding the Fourth Proportional to 83,361.78, 115,039.31 and 45,636.03

Step by Step Solution

1. Step 1: Write the proportion equation
   83,361.78 : 115,039.31 = 45,636.03 : x
2. Step 2: Convert to fraction form
   83,361.78/115,039.31 = 45,636.03/x
3. Step 3: Cross multiply
   83,361.78x = 115,039.31 × 45,636.03
4. Step 4: Simplify right side
   83,361.78x = 5,249,937,174.16
5. Step 5: Solve for x
   x = 5,249,937,174.16/83,361.78
6. Step 6: Final answer
   x = 62,977.75