Finding the Fourth Proportional to 83,631.71, 115,411.82 and 45,391.25

Step by Step Solution

1. Step 1: Write the proportion equation
   83,631.71 : 115,411.82 = 45,391.25 : x
2. Step 2: Convert to fraction form
   83,631.71/115,411.82 = 45,391.25/x
3. Step 3: Cross multiply
   83,631.71x = 115,411.82 × 45,391.25
4. Step 4: Simplify right side
   83,631.71x = 5,238,686,836.15
5. Step 5: Solve for x
   x = 5,238,686,836.15/83,631.71
6. Step 6: Final answer
   x = 62,639.96